SDR EIAA9613

Service difficulty report · Switch · Boeing 747212B

Difficulty date
May 12, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N485EV
Make and model
Boeing 747212B
Aircraft serial
20712
Engine
Pwa JT9D7J
Part
Switch
Part number
21SN4149
Condition
Malfunctioned
Location
Nr 3 Starter
Stage of operation
IN
Nature of condition
O
Precautionary procedure
E

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

What was found

JFK - FL 310 - NR 3 START VLV OPEN LIGHT ILLUMINATED. ACCOMP ABNORMAL PROCEDURE, ENG SHUTDOWN. WHEN ENG WAS THROTTLED BACK, ENG STALLED. NO ABNORMAL EGT EXCURSIONS NOTED. OCCURRED ABOUT 1.20 EPR. REMOVED AND REPLACED ENG NR 3 START VLV AND PRESS SWITCH PER MM 80-11-80. OPS CHECK GOOD. PERFORMED ENG INSPECTION PER MM 71-00-43. PERFORMED BOROSCOPE INSPECT PER 72-00-00. PERFORMED WINDMILLING INSPECT PER 72-00-00. ENG OPS CHECK GOOD PER 71-00-00. CHECKED MAIN OIL FILTER AND CHIP DETECT, FOUND OK. REPLACED START VLV PRESS SWITCH PER MM 80-11-05. (M)

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