SDR IPXA2019122050219

Service difficulty report · Switch · Boeing 75724APF

Difficulty date: December 19, 2019
Submitted: February 3, 2020
Operation: Air carrier
Aircraft: N452UP
Make and model: Boeing 75724APF
Aircraft serial: 25473
Aircraft time: 35,246 hours, 19,940 cycles
System (JASC): 5230 · Cargo/Baggage Doors
Part: Switch
Condition: Out Of Adjust
Location: Cargo Door
Stage of operation: TO
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

ATB - AFTER LIFTOFF RECEIVED A MAIN CARGO DOOR MESSAGE WITH LIGHT. ACFT REMAINED PRESSURIZED. AIR TURNBACK. MAIN CARGO DOOR SYSTEM MSG. TRANSFERRED MAIN CARGO DOOR INDICATION PER MEL/DMP 52-71-1. MAIN CARGO DOOR CLOSED/LATCHED/FAIRED.CKD & ADJUSTED MCD INTERLOCK SWITCHES IAW AMM 52-72-00-825-183. CKD ADJUSTMENT OF MCD LOCK SWITCHES IAW 52-72-00-825-166. SWITCHES WERE IN LIMITS. MCD OPS CKS GOOD IAW AMM 52-32-00-715-011. THIS CLEARS M693385

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