Service difficulty report · Bleed Air Sys · Doug MD11F

Difficulty date
March 28, 2025
Submitted
March 31, 2025
Operation
Air carrier
Aircraft
N257UP
Make and model
Doug MD11F
Aircraft serial
48451
Aircraft time
83,296 hours, 19,127 cycles
Part
Bleed Air Sys
Part number
11501281
Part serial
BN114480
Condition
Inoperative
Location
Zone 100
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

DIVERTED, LEVEL 1 BLEED AIR 1 OFF. WHEN THE BLEED 1 TRUNED OFF THE BLEED TEMPERATURE WENT RED AND SHOWED APPROXIMATELY 255°C T/S W/REF TO FIM 36-11-01-01 STEPS 1-8 AND 36 .FOUND HIGH STAGE INTERMEDIATE SENSOR T2-1187 FOR PSC 1 FAULTED REPLACED SENSOR W/REF TO AMM 36-11-05. SENSOR PASSES RTS. PERFORMED FIM 36-11-01-01 AGAIN . NO FAULTS FOUND . #1 BLEED AIR SYSTEM OK FOR SERVICE.

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