Service difficulty report · Valve · Boeing 7472D3B

Difficulty date
June 7, 2006
Submitted
June 12, 2006
Operation
Air carrier
Aircraft
N506MC
Make and model
Boeing 7472D3B
Aircraft serial
21252
Aircraft time
86,258 hours, 17,887 cycles
Engine
Ge CF650E2
Engine time
64,620 hours, 13,324 cycles
Part
Valve
Part number
9788925
Condition
Malfunctioned
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
E, J, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFTER T/O, FIRE INDICATION POINTERS BELL NR 1 ENGINE. COMPLETED ENGINE FIRE, SEVERE DAMAGE OR SEPARATION CHECKLIST. JETTISON APPROX 70,000 KGS, OF FUEL. LANDED UNDER MAX LANDING WEIGHT. PERFORMED PNEUMATIC LEAK CHECK PER MM 71-00-00 PG 510, CHECK OK. PERFORMED MPA CHECK PER MM 71-00-00 PG 524 OPS OK. INSPECTED ENGINE DUCTING, NO DEFECTS FOUND. LOCKED OUT HIGH STAGE VALVE AND ITEM DEFERRED.

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