Service difficulty report · Compressor · Boeing 747122

Difficulty date
February 1, 2002
Submitted
February 1, 2002
Operation
Air carrier
Aircraft
N852FT
Make and model
Boeing 747122
Aircraft serial
19757
Aircraft time
86,968 hours, 21,534 cycles
Engine
Pwa JT9D7
Engine time
60,795 hours, 17,833 cycles
Part
Compressor
Condition
Failed
Location
Nr 3 Engine
Stage of operation
CL
How discovered
O
Nature of condition
E, R
Precautionary procedure
E, A

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

What was found

WHILE CLIMBING, NR 3 FAILED WITH LOUD BANG AND VIBRATION. EPR DECREASED RAPIDLY AND EGT INCREASED TO APPROX 910. PERFORMED ENG FIRE/SEVERE DAMAGE CHECKLIST. SECURED ENGINE WITH ENGINE SHUTDOWN CHECKLIST. EMERGENCY DECLARED; DIVERTED TO SIN - CHANGI AIRPORT. APPARENT CAUSE OF FAILURE IS 8TH STAGE COMPRESSOR DAMAGE.