Yakutia B737 near Moscow on Dec 5th 2012, two hydraulic systems in problems

Last Update: December 6, 2012 / 17:47:34 GMT/Zulu time

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Incident Facts

Date of incident
Dec 5, 2012

Classification
Incident

Airline
Yakutia Airlines

Flight number
R3-784

Departure
Neriyungri, Russia

Destination
Moscow Vnukovo, Russia

Aircraft Registration
VQ-BLT

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

A Yakutia Airlines Boeing 737-700, registration VQ-BLT performing flight R3-784 from Neriyungri to Moscow Vnukovo (Russia) with 76 passengers and 6 crew, was enroute at FL360 about 2:15 hours into the flight when the crew received indication of low pressure on the engine driven hydraulic pump of hydraulic system A, the relevant checklists were actioned and the pump switched off. About 3:30 hours into the flight, still at FL360, the crew received indication of low pressure on the engine driven pump of hydraulic system B. The relevant checklist was actioned resulting in that pump being turned off too. The crew descended the aircraft to FL280 in order to control the hydraulic fluid temperatures, both systems continued to operate on the electrical pumps without obvious hydraulic leaks, so that the crew continued the flight to Vnukovo Airport. Upon approach to the aircraft and lowering the gear the crew received low hydraulic pressure indication on system A on all electrical and mechanical pumps and was unable to extend the gear. The crew went around, performed an alternate gear extension and landed safely at Vnukovo Airport about 20 minutes after aborting the first approach and 7:03 hours after departure from Neriyungri.

Rosaviatsia reported the aircraft had accumulated 29,630 hours in 21,496 flight cycles and had undergone its last daily inspection on Dec 3rd before departure from Vnukovo Airport. A post flight inspection revealed no trace of hydraulic leaks.
Incident Facts

Date of incident
Dec 5, 2012

Classification
Incident

Airline
Yakutia Airlines

Flight number
R3-784

Departure
Neriyungri, Russia

Destination
Moscow Vnukovo, Russia

Aircraft Registration
VQ-BLT

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

This article is published under license from Avherald.com. © of text by Avherald.com.
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