RECENT TAIL-STRIKE INCIDENTS IN COMMERCIAL AVIATION

 

Causes, Training Implications and Remedial Measures

The recent increase in reported tail strikes during landing and very-low-level go-arounds has raised concerns about flight crew competence and training standards. Several incidents involve several major aircraft types, including the Airbus A321neo, A300-600, A350-900, A350-1000 and Boeing 777-300ER.

These occurrences do not establish that airline pilots are generally incompetent. They do, however, reveal recurring weaknesses in energy management, pitch control, bounce recovery, go-around decision-making and crew coordination in the final seconds before landing.

The typical sequence is:

unstable or disturbed approach → delayed decision → abnormal flare or touchdown → bounce or low-level go-around → excessive or mistimed pitch input → tail strike.

The immediate cause is usually excessive pitch attitude or pitch rate. The deeper causes often include continuation of an unstable approach, poor recovery from a bounce, startle, insufficient awareness of long-body aircraft geometry, and inadequate monitoring and training that does not realistically replicate go-arounds initiated during the flare or after touchdown.

The most effective remedies are stricter stabilised-approach discipline, realistic simulator training, better bounce-recovery instruction, improved monitoring, stronger training on long-body differences, and proactive use of flight-data monitoring.

1. Recent occurrence pattern

An IndiGo A321neo reportedly suffered a tail strike during a low-altitude go-around at Mumbai in heavy rain. The aircraft climbed away and subsequently landed safely. The event combined degraded visual references, a late transition from landing to go-around, and the limited tail clearance margin of a long-bodied aircraft.

A Wizz Air UK A321neo experienced a tail strike on landing at Prague. Although detailed findings were not immediately available, the incident again involved the long A321 variant.

An EAT Leipzig A300-600 reportedly sustained a tail strike during a landing and a baulked-landing sequence at London Heathrow. Such events are particularly demanding because the crew may select go-around thrust while the aircraft is still touching, bouncing, or settling towards the runway.

A Cathay Pacific A350-1000 contacted the runway during a go-around initiated in the flare at Hong Kong. The aircraft sustained damage to its lower aft fuselage. The commander was highly experienced, demonstrating that total flying hours alone do not eliminate vulnerability to a sudden, high-workload event close to the ground.

A Singapore Airlines A350-900 was also reported to have sustained a tail strike during a go-around at Singapore.

An Air India A321neo reportedly sustained a tail strike during a go-around at Bengaluru. Wake turbulence was cited as a possible cause, although final conclusions require analysis of recorded data.

A Kalitta Air Boeing 777-300ER freighter scraped its tail during a go-around at Cincinnati. Video showed a trail of sparks before the aircraft climbed away and later landed safely.

These events share three common characteristics:

a) they occurred mainly during landing or during very-low-level go-arounds;

b) several involved long-bodied aircraft;

c) they affected different airlines, aircraft types and levels of crew experience.

2. Is poor pilot competence the main cause?

Pilot handling is directly involved in most tail strikes because contact generally requires an excessive pitch attitude, an excessive rotation rate, or an inappropriate control response. However, attributing every occurrence solely to poor flying competence is inadequate.

Competence in this area includes:

a) maintaining the correct energy state;

b) recognising an unstable approach;

c) making a timely go-around decision;

d) controlling pitch precisely;

e) recovering correctly from a bounce;

f) executing a go-around after touchdown;

g) monitoring the other pilot;

h) transferring control clearly;

i) responding appropriately under surprise and time pressure.

A pilot may be licensed, experienced and recurrently checked, yet have limited exposure to sudden sink, bounce or go-around initiated during the flare. The concern is therefore not necessarily a general decline in licensing standards. It is more likely a mismatch between conventional training and the scenarios encountered in line operations.

Many recurrent simulator programmes practise go-arounds from stable approaches at predictable altitudes. Far fewer realistically reproduce:

a) an unexpected bounce;

b) a go-around after main-gear contact;

c) delayed engine response;

d) wake-induced sink below 50 feet;

e) degraded visual references;

f) simultaneous control inputs;

g) reduced pitch margin on long-bodied variants.

The problem is therefore better described as a deficiency in scenario-based preparation, judgement and dynamic handling, rather than a simple lack of basic flying skills.

3. Principal causal factors

3.1 Excessive or mistimed pitch

The immediate cause of most tail strikes is an excessive nose-up attitude or a rapid increase in pitch while the aircraft is still on, or very close to, the runway.

During a low-level go-around, engine thrust does not immediately produce climb. Engine acceleration, aircraft inertia and lift development require time. If the pilot attempts to gain immediate ground clearance mainly by pulling back, the tail may contact the runway before climb performance develops.

The governing principle is:

Thrust creates the climb; pitch must remain within the available aerodynamic and geometric margins.

3.2 Unstable approach and poor energy management

Many tail strikes begin well before touchdown.

Typical precursors include:

a) excessive approach speed;

b) high sink rate below 100 feet;

c) late configuration;

d) inappropriate thrust;

e) repeated vertical corrections;

f) an approach requiring an aggressive flare.

An aircraft may be aligned with the runway and close to the glidepath yet still be unstable in energy. If it crosses the threshold too fast or with excessive sink, the pilot may attempt to salvage the landing with a large flare.

This may result in a firm touchdown, a bounce, a prolonged float, or direct tail contact.

Stabilised-approach monitoring must therefore continue right up to touchdown. An approach that was stable at 500 or 1,000 feet can deteriorate rapidly below 100 feet.

3.3 Delayed go-around

A go-around initiated well above the runway is relatively straightforward. A go-around initiated during the flare or after touchdown is far more demanding.

Late decisions may result from:

continuation bias;

a) belief that the approach can still be recovered;

b) reluctance to accept delay or additional fuel burn;

c) weak intervention by the monitoring pilot;

d) operational pressure to complete the landing;

e) an organisational culture that informally discourages go-arounds.

Some late go-arounds are unavoidable due to sudden wind changes, runway incursions, wake encounters, or loss of visual reference. However, when the approach was already deteriorating, a flare-level go-around often marks the final stage in a chain of missed opportunities.

3.4 Incorrect bounce recovery

A bounced landing is one of the most significant precursors to a tail strike.

The instinctive response may be to pull back to soften the next touchdown or to prevent the nose from dropping. This can increase the aircraft's pitch as it descends back towards the runway.

The risk is greatest when the aircraft is slow, thrust is near idle, and the bounce is pronounced.

Crews must distinguish between a minor bounce that may be recoverable under the manufacturer’s guidance and a significant or worsening bounce that requires a go-around.

Particularly hazardous actions include:

a) forcing the aircraft back onto the runway;

b) making large fore-and-aft control inputs;

c) attempting to soften the second touchdown with excessive pitch;

d) delaying the go-around after a severe bounce.

3.5 Long-body aircraft geometry

Several recent events involved long-fuselage aircraft.

A long fuselage does not make an aircraft unsafe, but it reduces the geometric margin between a normal operational pitch attitude and tail contact.

Tail clearance is influenced by:

1) landing-gear compression;

2) runway slope;

3) pitch rate;

4) aircraft mass;

5) centre of gravity;

6) vertical acceleration;

7) bounce dynamics.

Cockpit commonality can create a false sense of familiarity. A pilot moving from an A320 to an A321, from an A350-900 to an A350-1000, or from a shorter Boeing 777 variant to the 777-300ER may operate in a familiar cockpit, even though the tail-clearance margin has been materially reduced.

Differences training should therefore address handling and geometry, not merely aircraft systems.

3.6 Startle and overcontrol

A sudden sink, bounce, wake encounter, or runway conflict can trigger an instinctive urge to pull the aircraft away from the ground.

On a large transport aircraft, the tail responds immediately to a pitch input, whereas useful climb performance develops more slowly. An abrupt aft input may therefore reduce tail clearance before thrust becomes effective.

This may not reflect a lack of knowledge. It may indicate that the correct response has not been sufficiently practised in realistic conditions.

3.7 Weak monitoring and control transfer

The pilot monitoring should identify:

a) excessive sink rate;

b) abnormal pitch;

c) unstable flare;

d) significant bounce;

e) unsafe continuation;

f) incorrect go-around attitude.

Intervention should be progressive and unambiguous:

1) identify the deviation;

2) issue a corrective call;

3) command a go-around;

4) take control only when necessary.

An abrupt takeover near the runway may result in simultaneous or conflicting control inputs if the transfer is not verbally announced.

3.8 Environmental and operational factors

Heavy rain, gusts, crosswind, wind shear, turbulence and wake can cause sudden changes in flight path near touchdown.

These conditions are generally triggering factors rather than complete explanations. The outcome also depends on the crew’s recognition, pitch response, thrust application and decision timing.

Fatigue and operational pressure can further impair judgement, reaction time, monitoring and willingness to go around. These factors should be considered in every serious tail-strike investigation.

4. Root-cause framework

Tail strikes can be considered at four levels.

Immediate event

1) excessive pitch attitude;

2) excessive pitch rate;

3) abnormal rotation;

4) mishandled flare or bounce;

5) excessive pitch during go-around.

Operational precursor

a) unstable energy state;

b) high sink below 100 feet;

c) disturbed approach;

d) delayed go-around;

e) poor thrust-pitch coordination.

Crew-performance factor

a) startle;

b) weak monitoring;

c) poor control transfer;

d) inadequate understanding of aircraft geometry;

e) continuation bias.

Organisational factor

a) unrealistic recurrent training;

b) weak instructor standardisation;

c) limited differences training;

d) inadequate flight-data monitoring;

e) poor fatigue controls;

f) a culture that discourages go-arounds.

Corrective action must address all four levels. Retraining only the crew involved addresses the final symptom rather than the wider safety system.

5. Priority remedial measures

Enforce stabilised approaches to touchdown

Stabilisation criteria should remain below the conventional 500- or 1,000-foot gate.

A go-around should be mandatory for:

1) excessive sink rate;

2) speed outside limits;

3) repeated large corrections;

4) inappropriate thrust;

5) loss of required visual reference;

6) inability to achieve a normal flare.

Train low-level and post-touchdown go-arounds

Recurrent simulator programmes should include:

1) go-around during the flare;

2) go-around after main-gear contact;

3) go-around following a bounce;

4) delayed engine acceleration;

5) wake-induced sink;

6) degraded visibility;

7) long-body pitch-limit management.

Some scenarios should be introduced without warning to assess startle management and judgement.

Reinforce pitch discipline

Training should emphasise:

1) apply go-around thrust;

2) control the descent with measured pitch input;

3) respect prescribed pitch attitudes and pitch-limit indications;

4) allow thrust and speed to establish climb;

5) avoid seeking immediate separation through elevator alone.

Improve bounce-recovery training

Crews should receive clear guidance on minor and significant bounces.

Training should reinforce:

a) maintaining a stable attitude;

b) avoiding large control inputs;

c) not forcing the aircraft onto the runway;

d) going around when bounce severity is uncertain.

Strengthen pilot monitoring

Operators should standardise calls for:

a) deviation;

b) correction;

c) mandatory go-around;

d) control takeover.

The pilot monitoring must be empowered to call a go-around without hesitation.

Improve long-body differences training

Pilots transitioning to long variants should receive practical training in:

a) maximum-weight rotation;

b) high-sink landing;

c) bounced landing;

d) crosswind flare;

e) go-around during flare;

f) go-around after touchdown.

Computer-based familiarisation alone is insufficient.

Use flight-data monitoring proactively

Operators should track:

a) rotation rate;

b) pitch at lift-off;

c) sink 100 and 50 feet below;

d) touchdown vertical acceleration;

e) bounce signatures;

f) pitch after touchdown;

g) low-level go-arounds;

h) unstable approaches continued to land.

The purpose should be early risk detection rather than punishment.

Create a go-around-positive culture

Crews should not be criticised for prudent go-arounds prompted by fuel scrutiny, delay reviews, or informal pressure.

Safety performance should focus on unstable approaches continued to land, late go-arounds, and repeated high-sink or bounce events—not on the total number of go-arounds.

Conclusion

The recent pattern of tail strikes does not prove that commercial pilots are generally incompetent. It reveals a recurring weakness in the management of energy, pitch and decision-making during landing and very-low-level go-around manoeuvres.

The final mechanism is usually excessive or mistimed pitch. The underlying causes commonly include:

a) unstable or disturbed approaches;

b) delayed go-around decisions;

c) incorrect bounce recovery;

d) startle-induced overcontrol;

e) reduced pitch margin on long-bodied aircraft;

f) weak monitoring;

g) inadequate scenario-based training;

h) organisational pressure to continue.

The solution is not simply more frequent checks. It requires realistic simulator training, strict enforcement of the stabilised approach, improved bounce and low-level go-around instruction, stronger monitoring, improved differences training, and proactive use of flight data.

A tail strike may be caused by the final pitch input, but it is usually prevented by earlier decisions, monitoring and organisational safeguards.

Author: GR Mohan

The Hidden Weight Onboard: Unmonitored Cabin Loads and the Progressive Erosion of Aviation’s Margin for Manoeuvre

 Commercial aviation has achieved an extraordinary level of safety by managing risk through precision, standardisation and disciplined adherence to established procedures. Every flight is supported by carefully calculated weight-and-balance data, ensuring that aircraft operate within certified performance and handling envelopes. However, these calculations depend on assumptions that accurately reflect operational reality. One such assumption is the statistical estimation of passenger and cabin baggage weight.

For decades, standard passenger weights and average baggage allowances have provided a practical and effective way to manage aircraft loading without the operational burden of weighing every passenger and every cabin bag. This approach remains fundamentally sound. However, evolving passenger behaviour, changes in baggage policies, and the widespread adoption of high-density packing solutions, such as vacuum-compression bags and multi-pocket overcoats, have introduced a new variable: cabin baggage that complies with dimensional restrictions yet may exceed historical weight assumptions.

This paper examines the emerging risk posed by unmonitored cabin weight and its potential impact on aircraft performance, handling qualities, cabin safety and operational resilience. The issue is not that additional cabin baggage alone creates an unsafe condition, but that accumulated, unrecognised weight gradually erodes the performance margins upon which safe flight depends. These effects extend beyond take-off and landing performance into high-altitude cruise, where increased weight reduces excess thrust, narrows buffet margins and limits the aircraft's ability to respond to unexpected events such as turbulence or rapid altitude changes.

Applying the principles of aircraft performance, centre-of-gravity management, human factors, and Safety Management Systems (SMS), this paper argues that unmonitored cabin weight is a latent hazard that warrants proactive evaluation before it becomes a contributing factor in an accident investigation.

Introduction

Aviation safety is built upon margins.

Every commercial aircraft departing an airport carries carefully calculated reserves of performance and controllability. These margins allow pilots to manage the unexpected: runway contamination, sudden weather deterioration, a system malfunction, turbulence, or a demanding operational decision. The aircraft does not operate safely because every flight proceeds exactly as planned; it operates safely because sufficient margin exists when reality differs from the plan.

Weight is one of the fundamental elements determining those margins.

Before every flight, operators calculate aircraft weight, centre of gravity, fuel requirements, take-off performance, climb capability and landing performance. These calculations are highly sophisticated and supported by extensive certification data. However, like every engineering model, they depend upon the accuracy of the assumptions used as inputs.

One of those assumptions concerns passenger and baggage weight.

Historically, the aviation industry has successfully managed this challenge through statistical methods. Instead of weighing every passenger before every flight, regulators and operators use standard passenger weights derived from large-scale surveys. These values provide a practical balance between operational efficiency and safety assurance.

The system works because individual variations generally balance out across a large population.

However, aviation does not operate in a static environment.

Passenger behaviour has changed significantly over the past two decades. The growth of low-cost carrier business models, higher checked baggage charges, tighter turnaround requirements and shifting passenger expectations have altered the way travellers pack and carry their belongings. At the same time, luggage technology has evolved rapidly. Of late, a plethora of lightweight suitcases, expandable bags and vacuum compression systems have emerged, allowing passengers to maximise the amount of material carried within the same external dimensions. Even overcoats with multiple inner compartments have emerged as an alternative for carrying personal items on board without risking airline scrutiny.

The operational concern arises when these small differences accumulate across the entire aircraft.

A modern narrow-body aircraft carrying 180 passengers provides a simple illustration. If each passenger carries just three kilograms more cabin baggage than assumed, the aircraft may depart with approximately 540 kilograms of additional unaccounted weight. At five kilograms per passenger, the difference approaches one tonne.

One additional passenger carrying an overweight bag is insignificant.

An entire aircraft carrying hundreds of kilograms of unrecognised mass is a different operational consideration.

The concern is not that aircraft are suddenly operating outside their certification limits. Modern aircraft are designed to be highly robust. The concern is that unmonitored weight progressively erodes the very margins that allow pilots and operators to manage abnormal circumstances.

This is the essence of Safety Management System thinking: hazards rarely appear suddenly. They emerge from gradual changes in operating conditions, assumptions and behaviours as the system approaches its boundaries.

Unmonitored cabin weight is one such emerging change.

The Evolution of Passenger Weight Assumptions

The use of standard passenger weights is a well-established aviation practice. Regulators, including the European Union Aviation Safety Agency (EASA), the Federal Aviation Administration (FAA) and other national authorities, permit operators to use approved standard values derived from statistical surveys rather than requiring individual passenger weighing on every flight.

The rationale is clear.

Commercial aviation requires predictable and efficient operations. Weighing several hundred passengers and their baggage before each departure would pose significant logistical challenges, increase turnaround times and potentially create new operational issues.

Statistical methods therefore provide a practical solution.

The aviation industry has long relied on the principle that large populations yield predictable averages. Although individual passengers may vary significantly in weight, the statistical distribution across hundreds of flights provides a reliable operational basis.

However, statistical models are only as accurate as the population behaviour they represent.

The challenge today is not the statistical methodology itself. The challenge is whether the underlying behaviour being measured has changed.

Traditional baggage assumptions were developed during an era when cabin baggage generally reflected its external size. A small cabin bag usually contained a limited amount of clothing, personal items and documents. Additional belongings were normally placed in checked baggage, where they could be weighed and accounted for.

Modern travel patterns have altered this relationship.

Many passengers now actively seek to maximise their cabin baggage allowance. Checked baggage fees have encouraged travellers to move items from the hold into the cabin. At the same time, luggage manufacturers have developed products that increase carrying capacity without increasing external dimensions.

Vacuum compression bags are a particularly effective example.

By removing trapped air between clothing layers, these bags significantly reduce volume. The mass of the clothing remains unchanged, but the passenger can now fit substantially more clothing into a bag of the same size.

From a passenger's perspective, this is an efficient use of available space.

From a weight-management perspective, it creates a mismatch between what the airline observes and what the aircraft actually carries.

The industry has traditionally used baggage size as a practical proxy for baggage weight. Compression technology challenges that assumption.

A bag may satisfy the dimensional test while exceeding the weight profile historically associated with its size.

This marks a subtle yet important change in the relationship between volume and mass.

The Hidden Mathematics of Unmonitored Cabin Weight

The difficulty with emerging hazards is that they rarely announce themselves with fanfare.

A single passenger carrying an additional two or three kilograms of baggage does not pose a safety concern. The aircraft will not suddenly exhibit unacceptable performance. The flight crew will not detect anything unusual during normal operations.

However, aviation risk management is concerned with cumulative effects.

Consider a typical Airbus A320 or Boeing 737 carrying approximately 180 passengers.

If the actual cabin baggage weight exceeds assumed values by:

· 2 kg per passenger: approximately 360 kg additional weight

· 3 kg per passenger: approximately 540 kg additional weight

· 4 kg per passenger: approximately 720 kg additional weight

· 5 kg per passenger: approximately 900 kg additional weight

These numbers become more meaningful when considered operationally.

An additional 900 kilograms is equivalent to carrying several extra passengers, extra fuel, or a significant cargo load. More importantly, unlike planned payload, this additional weight may not appear in the aircraft's loading calculations.

The aircraft therefore begins its flight under slightly different performance conditions than expected.

The effect of additional weight is not linear across all flight conditions.

At an airport with a long runway, moderate temperatures and low elevation, the difference may have little operational significance. However, aviation safety is not built on ideal conditions.

The margins matter most when circumstances become demanding.

A heavily loaded aircraft departing from a high-altitude airport on a hot day has less available climb performance. An aircraft encountering severe turbulence at cruise altitude has less energy margin for recovery. An aircraft operating near maximum landing weight has reduced braking and handling reserves.

The additional weight itself is not necessarily dangerous.

The erosion of available options is a concern.

Weight and the Aircraft Performance Envelope

The consequences of additional weight begin before the aircraft leaves the ground and continue throughout the flight.

Aircraft performance is fundamentally a balance between available and required energy.

To accelerate, climb, cruise and manoeuvre, the aircraft requires sufficient thrust and aerodynamic capability to overcome its weight. Increasing weight raises the lift required to maintain flight, which in turn increases induced drag and reduces overall efficiency.

At take-off, increased weight results in higher rotation and take-off speeds, a longer ground roll and reduced climb performance. During landing, the aircraft approaches with higher energy, requiring longer stopping distances and greater brake energy absorption.

However, the most interesting and least discussed effects occur once the aircraft reaches altitude.

At cruise levels commonly used by modern transport aircraft—typically between FL350 and FL410—the aircraft operates within a relatively narrow aerodynamic envelope.

As altitude increases, engine thrust decreases due to lower air density. At the same time, the margin between low-speed stall buffet and high-speed Mach buffet narrows.

This region is often described as the "coffin corner."

Additional weight shifts the lower boundary of this envelope upward, increasing stall speed and thereby narrowing the aircraft's acceptable operating speed range.

The practical implication is not that the aircraft becomes uncontrollable. Rather, it becomes less tolerant of unexpected events. A heavier aircraft may require greater thrust to maintain altitude, may have reduced ability to climb above turbulence, and may have less flexibility in responding to changing Air Traffic Control requirements.

In smooth air, the difference may never be noticed.

However, in operationally demanding situations, the aircraft has fewer options available.

This is where the concept of margin of manoeuvre becomes critical.

Author: GR Mohan