Service difficulty report · Compressor · Doug DC932

Difficulty date
March 15, 1998
Submitted
March 26, 2000
Operation
Air carrier
Make and model
Doug DC932
Engine
Pwa JT8D7A
Part
Compressor
Condition
Damaged
Location
Nr 2 Engine
Part time
57,552 hours
Stage of operation
TO
Nature of condition
R, J
Precautionary procedure
C

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

What was found

(CAN) ON TAKEOFF, POWER LEVERS BROUGHT TO 1.4 EPR FOR RUN-UP, ALL OKAY. AT APPROXIMATELY 85-95 KNOTS, THE NR 2 ENGINE HAD A POWER LOSS. EGT INITIALLY AT 700 CELCIUS, ON SHUTDOWN EGT AT 800 CELSIUS. FIRE TRUCKS CALLED. INSPECTION FOUND HEAVY DAMAGE TO THE HIGH PRESSURE COMPRESSOR. 7TH STAGE VANE FAILURE, 8TH STAGE BLADE FAILURE. HEAVY DAMAGE TO THE 9TH AND 10TH STAGE DISKS. INVESTIGATION FOUND NO FIRM CAUSE OF THE SITUATION. SEVERAL AREAS COULD HAVE CAUSED THIS FAILURE. STAGE 7 VANE FAILURE; STAGE 7 BLADE FAILURE; STAGE 8 LOCK FAILURE, OR STAGE 8 BLADE FAILURE. THE ENGINE WAS NOT REPAIRED, BUT WAS CANNABILIZED.

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