Moskovia Airlines Flight 9675

(Redirected from 2008 Chelyabinsk An-12 crash) 2008 An-12 crash

Moskovia Airlines Flight 9675
Accident
RA-12957, the aircraft involved in the accident
Date	26 May 2008
Summary	In-flight fire leading to the destruction on aileron wiring that led to aileron failure
Site	Chelyabinsk Balandino Airport 55°24′N 061°30′E / 55.400°N 61.500°E / 55.400; 61.500
Aircraft
Aircraft type	Antonov An-12BP
Operator	Moskovia Airlines
IATA flight No.	3R9675
ICAO flight No.	GAI9675
Registration	RA-12957
Flight origin	Chelyabinsk Airport, Chelyabinsk, Russia
Destination	Perm Airport, Perm, Russia
Occupants	9
Crew	9
Fatalities	9
Survivors	0

On 26 May 2008, Moskovia Airlines Flight 9675, a Moskovia Airlines An-12 cargo aircraft crashed near Chelyabinsk, Russia. After taking off for a flight to Perm, it turned back due to a fire on board and crashed 11 kilometres (6.8 mi; 5.9 nmi) from the airport, killing all nine crew members.

Background

The aircraft, registered RA-12957 (cn 88345508), was built in 1968. After transporting a cargo of cash from Moscow to Chelyabinsk, it was operating as an empty flight numbered GAI9675 to Perm.

Flight

During the pre-takeoff checklist, the crew noted warnings about a power supply failure in engines 1 and 2, but ignored them, as recorded by the CVR:

Flight radio operator: "Sanya." (name of the engineer)
Flight engineer: "Yes?"
Flight radio operator: "Number two failed"
Instructor pilot: "And number one too"
Flight radio operator: "Alternator"
A crew member: "Screw it"
Flight radio operator: "Here we go"

The investigation team concluded that "here we go" probably referred to successful reactivation of the alternators by the radio operator.

The flight took off at 14:03 from Runway 09. At 14:03:55, the captain asked "What's the matter?". The flight engineer responded "doors open". It is unclear whether he was referring to the cargo doors or chassis doors, but the final report states that it was probably the chassis doors. The investigation found that the doors were closed at the time of the crash, and the false alarm was one of the first signs of problems in the power lines in the aircraft.

Another warning sounded 6 seconds later: "Too low, gear". This was erroneous, as the aircraft was climbing, and this warning can be triggered only during descent.

At 14:04:09, other crew members in the cabin advised the pilots about the fire.

Captain: "Come on, have a quick look... take a look what's going on there"
Flight radio operator: "Let's land maybe, or... OK, requesting"
Captain: "Wait, wait"
First officer: "My attitude indicator failed"
Captain: "Got it, taking control"

At this point, the aircraft was at 470 metres (1,540 ft) altitude and turning left. At 14:04:28, the captain decided to turn back to Chelyabinsk. The crew contacted ATC and requested priority landing due to smoke in the cockpit.

The weather was cloudy, ceiling 90–100 metres (300–330 ft), visibility 1,100 metres (3,600 ft). CVR recordings showed that the pilots discussed further failures of multiple systems, as well as multiple false failure alarms. They also stated that the source of fire was in the cargo section, and considered depressurizing the cabin. A trim failure warning was triggered at 14:07:15, and at 14:08, engine dislodging indicators were also triggered. The flight engineer warned the crew to operate the throttle slowly.

At 14:09:13, while the aircraft was turning left, engine 2 became unstable. Moments later, multiple fuses went off. At 14:09:54, engines 1 and 2 stopped due to fuel starvation. The cockpit voice recorder then stopped working, and the flight data recorder began to malfunction.

At 14:10:21, the captain started turning for the final approach. With only two engines operating, the plane's speed fell to 280 kilometres per hour (150 kn; 170 mph), the minimum permitted without flaps. Engine 3 was operating at 20%, and engine 4 was throttled back to 85%.

Beginning at 14:10:40, the aircraft began to bank heavily left (to 32°). It began descending at 14:10:48. At 14:10:43, the crew contacted the control tower and reported, "Gromov 9675, on landi... turning to final, 400, approaching, continuing approach". This was the crew's final transmission.

At 31 m above the ground, the aircraft clipped a high-voltage power line with its left wing. The aircraft then crashed in a field at 14:10:56, 11 kilometres (6.8 mi; 5.9 nmi) from Runway 09. Vertical speed at the time of impact was 5,000 feet per minute (25 m/s).

Investigation

An investigation concluded that during the last fifteen seconds of flight, the crew was unable to effectively operate the ailerons. Medical experts ruled out incapacitation due to smoke inhalation, meaning that the pilots could not operate the ailerons because of mechanical failure caused by the fire.

A fire also broke out after the crash. Because of the fire on the crash site, the investigation could not determine the exact location of the fire in the electrical system that caused the accident. The flight recorders were found severely damaged, but usable.

The final report states the following reasons for the accident:

The aviation incident with An-12 aircraft registered RA-12957 occurred as a result of impact with ground caused by lost control over the aircraft due to the destruction of aileron control wires during an emergency approach for landing because of smoke in the cabin.
Aileron control wires were destroyed most probably due to significant heating of nearby steel wires and subsequent breaking under operating load.
The heating may have been caused by an in-flight fire of nearby power lines, which is evidenced by smoke in the cabin, unexpected triggering of multiple warnings, equipment failures, and the failure of two engines.

Crew

The captain had 14,928 hours of flying experience, and the navigator had 11,021 hours. Both of them had no prior incidents.

References

Ranter, Harro. "ASN Aircraft accident Antonov 12BP RA-12957 Chelyabinsk Airport (CEK)". Retrieved 15 July 2016.
"Mass Media : Разбившийся Ан-12 перевозил деньги". Archived from the original on 30 May 2008. Retrieved 29 May 2008.
"Разбившийся Ан-12 перевозил деньги". Archived from the original on 20 April 2016. Retrieved 15 July 2016.
"Второй круг для Ан-12 оказался смертельным". Retrieved 15 July 2016.
"Катастрофа Ан-12Б ОАО Авиакомпания Московия близ Челябинска (борт RA-12957), 26 мая 2008 года. // AirDisaster.ru – авиационные происшествия, инциденты и авиакатастрофы в СССР и России – факты, история, статистика". Retrieved 15 July 2016.
"ОКОНЧАТЕЛЬНЫЙ ОТЧЕТ ПО РЕЗУЛЬТАТАМ РАССЛЕДОВАНИЯ АВИАЦИОННОГО ПРОИСШЕСТВИЯ" (PDF). Archived from the original (PDF) on 19 October 2016. Retrieved 16 July 2016.

External links

v t e Aviation accidents and incidents in 2008 (2008)
Jan 4 Transaven Turbolet crashJan 12 Macedonian Armed Forces Mi-17 crashJan 17 British Airways Flight 38Jan 23 Polish Air Force C-295 crashFeb 8 Eagle Airways Flight 2279Feb 14 Belavia Flight 1834Feb 21 Santa Bárbara Airlines Flight 518Feb 23 Andersen Air Force Base B-2 accidentMar 30 Biggin Hill Cessna Citation crashApr 3 Blue Wing Airlines An-28 crashApr 11 Kata Air Transport Flight 007Apr 15 Hewa Bora Airways Flight 122May 25 Kalitta Air Flight 207May 26 Moskovia Airlines Flight 9675May 30 TACA Flight 390Jun 10 Sudan Airways Flight 109Jul 7 Centurion Air Cargo Flight 164Jul 21 Guam B-52 crashJul 25 Qantas Flight 30Jul 31 East Coast Jets Flight 81Aug 20 Spanair Flight 5022Aug 24 Iran Aseman Airlines Flight 6895Aug 24 Aéreo Ruta Maya crashAug 28 Sriwijaya Air Flight 062Aug 30 Conviasa Boeing 737 crashSep 14 Aeroflot Flight 821Sep 19 South Carolina Learjet 60 crashOct 7 Qantas Flight 72Oct 8 Yeti Airlines Flight 101Nov 4 Mexico City crashNov 10 Ryanair Flight 4102Nov 27 XL Airways Germany Flight 888TDec 8 San Diego F/A-18 crashDec 20 Continental Airlines Flight 1404
2007 ◄ ► 2009

Aviation accidents and incidents in 2008 (2008)

Jan 4 Transaven Turbolet crashJan 12 Macedonian Armed Forces Mi-17 crashJan 17 British Airways Flight 38Jan 23 Polish Air Force C-295 crashFeb 8 Eagle Airways Flight 2279Feb 14 Belavia Flight 1834Feb 21 Santa Bárbara Airlines Flight 518Feb 23 Andersen Air Force Base B-2 accidentMar 30 Biggin Hill Cessna Citation crashApr 3 Blue Wing Airlines An-28 crashApr 11 Kata Air Transport Flight 007Apr 15 Hewa Bora Airways Flight 122May 25 Kalitta Air Flight 207May 26 Moskovia Airlines Flight 9675May 30 TACA Flight 390Jun 10 Sudan Airways Flight 109Jul 7 Centurion Air Cargo Flight 164Jul 21 Guam B-52 crashJul 25 Qantas Flight 30Jul 31 East Coast Jets Flight 81Aug 20 Spanair Flight 5022Aug 24 Iran Aseman Airlines Flight 6895Aug 24 Aéreo Ruta Maya crashAug 28 Sriwijaya Air Flight 062Aug 30 Conviasa Boeing 737 crashSep 14 Aeroflot Flight 821Sep 19 South Carolina Learjet 60 crashOct 7 Qantas Flight 72Oct 8 Yeti Airlines Flight 101Nov 4 Mexico City crashNov 10 Ryanair Flight 4102Nov 27 XL Airways Germany Flight 888TDec 8 San Diego F/A-18 crashDec 20 Continental Airlines Flight 1404

2007 ◄ ► 2009

v t e Aviation accidents and incidents in the Russian Federation in the 2000s
2001	Omsk An-70 crash (January 2001) Vladivostok Air Flight 352 (July 2001) Grozny Mi-8 crash (September 2001) Siberia Airlines Flight 1812 (October 2001) IRS Aero Flight 9601/02 (November 2001) Armed Forces of the Russian Federation Flight 9064 (December 2001)
2002	Shelkovskaya Mi-8 crash (January 2002) Pulkovo Aviation Enterprise Flight 9560 (July 2002) Khankala Mi-26 crash (August 2002)
2004	Russian aircraft bombings (August 2004)
2005	Regional Airlines Flight 9288 (March 2005)
2006	Armavia Flight 967 (May 2006) S7 Airlines Flight 778 (July 2006)
2007	UTair Flight 471 (March 2007) Shatoy Mi-8 crash (April 2007)
2008	Moskovia Airlines Flight 9675 (May 2008) Aeroflot Flight 821 (September 2008)
2009	Makhachkala Il-76 collision (January 2009) Yakutia Il-76 crash (November 2009)
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