Service difficulty report · Brake Disc · Doug MD11F

Difficulty date
March 24, 2012
Submitted
March 26, 2012
Operation
Air carrier
Aircraft
N296UP
Make and model
Doug MD11F
Aircraft serial
48474
System (JASC)
3242 · Brake
Part
Brake Disc
Condition
Failed
Location
Nr 1 Brake
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

FIVE MINUTES AFTER LEVEL OFF, LEVEL 1 "TIRE PRESS LOW" ILLUMINATED WITH NR 1 MAIN TIRE PRESSURE DECREASING ON SYNOPTIC, FOLLOWED WITH A LEVEL 2 "TIRE FAIL" FOR THE NR 1 TIRE. EMERGENCY DECLARED. CONFIRM WITH PILOT NO HIGH ENERGY STOP PFM AND CHECK. NR 1 BRAKE DISC BROKEN & NR 2 BRAKE DISC DAMAGED IAW AMM 32-43-20-4 AND AMM 32-41-01-4 REPLACED NR 1 AND NR 2 BRAKE AND TIRE ASSY, AXLE CHECK BRAKE TEMPERATURE SENSOR AND BTM/TPI TEST ALL CONDITIONS NORMAL IAW AMM 05-56-01-6 PFM HIGH ENERGY STOP INSPECTION CHECK. CONDITION NORMAL.

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