TREs reported some crews unfamiliar with the oxygen switch options. An EMERGENCY function clears fogging. Also the anti-fog coating can be damaged by cleaning fluids.
Misted Masks: AAIB A319 Report Reveals Oxygen Mask Lessons Read Post »
We translate the accident report (issued 23 April 2020) on a 2017 AS332L accident from Japanese. After a series of maintenance errors a deteriorating tail rotor blade flapping hinge finally failed in flight.
Ungreased Japanese AS332L Tail Rotor Fatally Failed Read Post »
We look at a change in maintenance practices after this incident and prompt safety collaboration to inform fellow MROs.
CFM56 HPC Titanium Fire Due to VSV Maintenance Assembly Error Read Post »
MLG actuator rod failure after loss of torque.
Beech 99A MLG Collapse Read Post »
Despite a Service Information Letter that highlighted the MM instructions, the NLG downlock actuator piston of this smokejumper aircraft was painted. The NLG collapsed on the next landing.
Poor Painting Prevents Proper Performance: Shorts Sherpa NLG Collapse Read Post »
Night SAR single pilot. While descending it entered a degraded visual environment and an inappropriate automation was made. ROD peaked at 1,952 ft/min. Aircraft pulled up at just 31 ft AGL. It was also flown on one more flight after the 159.5% over-torque.
SAR Helicopter Loss of Control at Night: ATSB Report Read Post »
The 3rd United A320 tachometer cross-connection maintenance error to emerge in just 5 months.
NTSB Confirms United Airlines Maintenance Error After 12 Years Read Post »
An improper repair failed and the pilot was faced with “a confusing set of cues and no definitive procedures for corrective action” say NTSB. The pilot was “was shocked at how quickly everything transpired”.
R44 Force Lands After Improper Repair Read Post »
An omission in the Maintenance Programme, perceived time pressures to complete the flight due to limited battery power, an insufficient controls check and corrosion during shipping from the Falklands resulted in a dramatic dockside drama.
S-61N Damaged During Take Off When Swashplate Seized Due to Corrosion Read Post »
An accident to a police helicopter in the Caribbean resulted in a worldwide check for corrosion in flying control actuators.
EC135 Main Rotor Actuator Tie-Bar Failure Read Post »
The maintenance organisation now treats window replacement as a Critical Maintenance Task and has improved its planning process to ensure better supervision. It also shows its important start have prompt, independent investigations.
A109E Window Loss Highlights Maintenance Lessons Read Post »
A maintenance error results in severe flight control problems and damage that wrote off a German VVIP business jet.
Luftwaffe VVIP Global 5000 Written Off After Flying Control Assembly Error Read Post »
The AAIB safety investigation revealed a difference between ‘work as imagined’ and ‘work as done’ in testing the pitot static system.
Over confidence in an inaccurately calibrated fuel gauge resulted in a forced autorotation and heavy landing.
UH-1H HESLO Fuel Exhaustion Accident Read Post »
Damage to a harness by a rigid tie wrap was enough to eventually cause a nose landing gear jam, in a previously not foreseen failure mode.
Tight Cable Tie Nose Gear Jam Read Post »
Informal verbal handovers over 4 shifts and skipping a key functional check had a hand in an air refuelling boom that went ‘crazy’ in flight and detached.
‘Crazy’ KC-10 Boom Loss: Informal Maintenance Shift Handovers and Skipped Tasks Read Post »
Unclear communications, shift handover & roles and responsibilities, complacency about fatigue and failure to use access equipment all feature in this serious incident.
ATR72 Missed Damage: Maintenance Lessons Read Post »
Errors embodying an AD resulted in a loss of air break control.
Glider Controls Fail After Non Compliant Maintenance Embodying an AD Read Post »
A slow deflation of a tyre was not noticed until a turnaround in Singapore. A Cold check was conducted on what was likely still a Hot tyre. It was erroneously decided the tyre could be kept in service but it burst during inflation.
B747-400F Tyre Explosion During Inflation Read Post »
The pilot made a safe run on landing. The TGB actuating rod had failed. An EASA AD followed.
AS350 Tail Rotor Control Incident, Grand Cayman Read Post »
In July 2019 the BEA reported on a series of propeller incidents that occurred due to a vibratory phenomena that was not uncovered in certification testing.
Severe Propeller Vibrations on ATR 72-212A: BEA Report Read Post »
A door safety strap, as it does not prevent falls, cannot replace a work platform installed outside the aircraft say CIAIAC. We look at some of the guidance on safe working at height on aircraft.
Hurried Door Inspection Results in Fall From Aircraft Read Post »
So you thought the UH-1H was a Bell product? Not to the FAA. Small third party ‘TC Holders’ are responsible for assessing the airworthiness impact of usage changes for ageing ex-military helicopters.
Usage Related Ex-Military Helicopter Accident Read Post »
The MRB damage made this occurrence meet the criteria for an accident say NTSB. A design change followed to avoid a production process that introduced micro-pitting.
Tail Rotor Lightning Strip Damages AW139 Main Rotor Read Post »
Portuguese accident investigators say an incorrect aileron control cable system installation was not detected despite an FLT CTRL NO DISPATCH message and 11 days of troubleshooting or by pre-flight crew checks.
ERJ-190 Flying Control Rigging Error Read Post »
