SDR P5CA2020111700384

Service difficulty report · Switch · Boeing 7673JHF

Difficulty date: November 16, 2020
Submitted: November 18, 2020
Operation: Air carrier
Aircraft: N643GT
Make and model: Boeing 7673JHF
Aircraft serial: 37809
Aircraft time: 18,974 hours, 5,125 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Switch
Part number: 6411371
Part serial: 5651
Condition: Malfunctioned
Location: Lt A/C Pack
Stage of operation: NR
How discovered: 9
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

LT PACK NO START, AFTER FEW SECONDS. "LT PACK OFF" EICAS MESSAGE AT LT PACK SW AUTO. RE-RACKED LT PTC & RE-CONNECT COMPRESSOR OUTLET OVERHEAT SW THEN OPERATIONS NORMAL. ALSO SW WIRING CHECKED OK AND REMOVE/REPLACED SW THEN OPERATIONS CHECK OK, PER FIM 21-51 TASK 876, WPM 21-51-11, AMM 21-51-19/201 & AMM 21-51-14/401.

More about the Boeing 767-3JHF