Service difficulty report · Brake Assy · Boeing 7772Q8

Difficulty date
April 17, 2016
Submitted
June 20, 2016
Operation
Air carrier
Aircraft
N774AM
Make and model
Boeing 7772Q8
Aircraft serial
28689
Aircraft time
60,037 hours, 8,524 cycles
Engine
Ge GE9094B
System (JASC)
3242 · Brake
Part
Brake Assy
Part number
215660PT2
Part serial
3231
Condition
Overheated
Location
Nr 4
Part time
47,186 hours, 7,028 cycles
Stage of operation
TO
How discovered
O
Nature of condition
J, A
Precautionary procedure
C

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

What was found

AIRCRAFT REJECTED TAKEOFF AT 100 KNOTS DUE TO AN EVENT OF 1023 DEGREES CELSIUS OF EGTS EXCEEDANCE IN THE FELT ENGINE AND BY NOTIFICATION OF THE AIR TRAFFIC CONTROL OF FIRE EVIDENCE IN THE RT MLG. THE ACFT WAS SENT TO HANGAR AND MAINTENANCE PERSONNEL PERFORMED AN INSPECTION ON THE LT ENGINE IAW AMM 71-00-00, EGT EXCEEDANCE LIMITS FIG 603, SHEET 2 AND THE APPROVED PCR ISSUED BY ENGINE MFG, BEING WITHIN LIMITS. THE HIGH ENERGY STOP, HEAT DAMAGE, BRAKE FIRE WAS PERFORMED IAW AMM 05-51-14 STEP D, DETECTING APPARENT EVIDENCE OF OVER TEMPERATURE OF THE MLG BRAKE, WHEEL AND TIRE ASSY NR 4. THE MLG BRAKE, WHEEL AND TIRE ASSY NR 4 WERE REPLACED IAW AMM 32-45-07 AND AMM 32-45-01. THE NRC´S A0237216, A0237220 AND A0237221 WERE ISSUED TO PERFORM THE HIGH ENERGY STOP, HEAT DAMAGE, BRAKE FIRE IAW AMM 05-51-14 STEPS D AND E. REPLACED THE MLG BRAKE, WHEEL AND TIRE ASSY NR 4, ALL CORRECT.

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