News & Comment

Ditching of Bristow S-76C++, Off Nigeria, 3 February 2016

Posted by on 8:53 pm in Accidents & Incidents, FDM / Data Recorders, Helicopters, Human Factors / Performance, Offshore, Oil & Gas / IOGP / Energy, Safety Management, Survivability / Ditching

Ditching of Bristow S-76C++, Off Nigeria, 3 February 2016 On 3 February 2016, Bristow Helicopters Nigeria Sikorsky S-76C++ 5N-BQJ ditched while en route from the deepwater ExxonMobil Erha Floating Production Storage Offloading (FPSO) vessel to Murtala Muhammed Airport Lagos. Accident Flight The Accident Investigation Bureau Nigeria (AIB Nigeria) say, in their safety investigation report (issued 25 April 2019), that on the outbound flight the Captain was the Pilot Flying (PF) while the First Officer was Pilot Monitoring (PM): A few minutes...

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USAF Helicopter Hoist Training Accident

Posted by on 6:20 pm in Accidents & Incidents, Helicopters, Human Factors / Performance, Military / Defence, Safety Management, Special Mission Aircraft

USAF Helicopter Hoist Training Accident On 27 April 2011, a USAF Bell UH-1N, 69-6603 of the 512th Rescue Squadron, 58th Special Operations Wing, Kirtland AFB, NM was performing hoist training when it was destroyed in an accident. The Accident Flight This accident was during an initial instructor flight engineer check ride.  According to the USAF Accident Investigation Board (AIB) report: The training site was at 5382 feet AMSL, c 11ºC  and wind was c 12 kts gusting 20 kts.  The Evaluating Flight Engineer was controlling the up-limit switch on...

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FAA Rules Applied: So Misrigged Flying Controls Undetected

Posted by on 4:57 pm in Accidents & Incidents, Business Aviation, Fixed Wing, Human Factors / Performance, Maintenance / Continuing Airworthiness / CAMOs, Safety Management

FAA Rules Applied: So Misrigged Flying Controls Undetected (Maintenance Human Factors and Independent inspections) On 30 April 2018, Cessna 172M Skyhawk II, N9085H, crashed shortly after takeoff in Bermuda. The Accident Flight In their investigation report the UK Air Accidents Investigation Branch (AAIB) say: The flight was planned to consist of a number of circuits and landings to refamiliarise the pilot with the aircraft [after it] had undergone a prolonged maintenance input. As this was the aircraft’s first flight after maintenance, the...

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Wrong Engine Shutdown Crash: But You Won’t Guess Which!

Posted by on 7:45 pm in Accidents & Incidents, Fixed Wing, Human Factors / Performance, Safety Management

Wrong Engine Shutdown Crash: But You Won’t Guess Which! A British airliner, an engine problem and the crew inadvertently shutting down the wrong engine, crashing close to the airfield.  Kegworth in 1989 right?  Well sorry for the click-bait title but that is not this human factors case study, which predates that accident by almost exactly 20 years. BUA BAC One-Eleven G-ASJJ 14 January 1969: The Accident Flight On the evening of 14 January 1969, British United Airways (BUA) BAC One-Eleven, G-ASJJ was due to depart Milan Linate bound for...

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A Failure in Propeller Design and Certification Resulted in the Loss of an EMB-120 in 1991

Posted by on 9:59 pm in Accidents & Incidents, Design & Certification, Fixed Wing, Safety Management

A Failure in Propeller Design and Certification Resulted in the Loss of an EMB-120 in 1991 On 5 April 1991 Atlantic Southeast Airlines (ASA) Embraer EMB-120 Brasilia N270AS left Atlanta, Georgia at 13:47 Local Time for Brunswick, Georgia as Delta Connection Flight 2311. At 1448:13 the aircraft was cleared for a visual approach to Glynco Jetport in Brunswick, Georgia. The crew acknowledged the clearance and then made a routine call on the company frequency.  There was no indication of any problems. Witnesses reported that all appeared normal...

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Tree Top Autorotation for B206L1 After Loose Fuel Line B-Nut Leaks

Posted by on 6:40 pm in Accidents & Incidents, Helicopters, Human Factors / Performance, Maintenance / Continuing Airworthiness / CAMOs, Safety Management

Tree Top Autorotation for B206L1 After Loose Fuel Line B-Nut Leaks On 2 April 2018 the privately owned Bell 206L-1 D-HHNC lost engine power during its initial climb from Uetersen/Heist Airfield and consequently the pilot initiated an autorotation.  According to the German BFU safety investigation report, realising he would not be able to reach the airfield and would likely land in trees, he… …flared the helicopter, pulled the pitch fully and in the last moment yawed consciously by about 180°, because he did not want hitting the...

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Contaminated Oxygen on ‘Air Force One’

Posted by on 11:58 am in Accidents & Incidents, Fixed Wing, Human Factors / Performance, Maintenance / Continuing Airworthiness / CAMOs, Military / Defence, Safety Management

Contaminated Oxygen on ‘Air Force One’ In April 2016 Boeing maintenance technicians contaminated the oxygen system of 92-9000, a USAF Boeing VC-25A, one of two converted B747-200Bs flown by the 89th Airlift Wing at Joint Base Andrews, Maryland as Presidential transports (using the call sign Air Force One, only when the President is on board).  The damage, done at a Boeing facility at Port San Antonio, Kelly Field, Texas, was spotted before any Presidential flying.  It cost $4 million to rectify, making this a Class A mishap in the...

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USAF T-38C Downed by Bird Strike

Posted by on 4:44 pm in Accidents & Incidents, Fixed Wing, Military / Defence, Safety Management

USAF T-38C Downed by Bird Strike On 17 August 2018, Northrop Grumman T-38C Talon 68-8206 of the USAF 71st Flying Training Wing, crashed in a field approximately 62 miles west of its base at Vance AFB, Oklahoma. The jet trainer was the lead of a two ship formation performing low-level training. The USAF Accident Investigation Board report, released 20 March 2019, explains that: While flying at approximately 1,000-1,500 feet above the ground and looking over his left wing at his wingman, the [pilot of the T-38C] heard a loud noise on the right...

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Maintenance Misdiagnosis Precursor to Tail Rotor Control Failure

Posted by on 10:57 am in Accidents & Incidents, Helicopters, Human Factors / Performance, Maintenance / Continuing Airworthiness / CAMOs, Safety Management

Maintenance Misdiagnosis Precursor to EC135 TRCF in Japan On 9 December 2007 Eurocopter EC135T2 JA31NH, operated by All Nippon Helicopter, took off from Tokyo Heliport for a ferry flight to Shizuoka Heliport.  The helicopter crashed on approach after a loss of tail rotor (fenestron) control.  The pilot died and a mechanic onboard was seriously injured. Investigators from the Japan Transport Safety Board (JTSB) determined that following the propagation of a fatigue crack, the tail rotor (TR) control rod had ruptured at the threaded connection...

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Easyjet A320 Flap / Landing Gear Mis-selections

Posted by on 8:19 am in Accidents & Incidents, Design & Certification, Fixed Wing, Human Factors / Performance, Safety Management

Easyjet A320 Flap / Landing Gear Mis-selections The UK Air Accidents Investigation Branch (AAIB) have reported on inadvertent flap retraction on departure from Liverpool John Lennon Airport on 24 June 2018, involving Easyjet Airbus A320 G-EZOZ. Incident Flight The crew were on the third sector of the day, from Liverpool to Paris Charles de Gaulle. The takeoff was planned from Runway 27 with Configuration 1+F (leading edge slats extended to 18° and trailing edge flaps extended to 10°) and an aircraft gross weight of 62.6 t.  The co-pilot was...

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