SDR S01732021

Service difficulty report · Brake Assy · Boeing 747400

Difficulty date
July 28, 2001
Submitted
August 9, 2001
Operation
Air carrier
Make and model
Boeing 747400
Aircraft serial
28710
Engine
Pwa PW4056
Part
Brake Assy
Part number
215152
Part serial
7691
Location
# 5 Mwt
Stage of operation
LD
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

B18202 1.A/C ACHIEVING AT GATE,# 5 MWT ASSY CAUGHT FIRE REPORT GRD STAFF. NOTE:BRK TEMP 2, TIRE PRESSURE 200 PSI. 2.THE SMOKE & FLAME ON # 5 MWT WAS SUBSTANTIALLY OBSERVED,THE FLAME SUSTAINED A FEW SECONDS BEFORE APPLYING FIRE EXTINGQUISHER.C/A:1.TLB 0114368-2 RECORDED THAT # 5 MWT & BRK UNIT WERE REPLACED,SYSTEM WAS RESUMED NORMAL. 2.EON 744-32-634053-006 WAS ISSUED FOR A DETAILED BENCH CHECK,WHICH REVEALED THAT THE FUNCTION IS NORMAL. BUT SOME RESIDUE GREASE REMAINED ON THE PISTON HOUSING, HEAT SINK & PISTONS. THESE AREA SHOULD BE FREE OF GREASE. 3.AMM 12-21-01 SHOULD BE FOLLOWED WHICH PREVENTS THE MLG BRK FIRE UNDER NORMAL BREAKING DUE TO EXCESSIVE GREASE & RESIDUAL CLEANING FLUIDS IN THESE AREA.

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