Service difficulty report · Switch · Boeing 74747UF

Difficulty date
May 3, 2022
Submitted
May 6, 2022
Operation
Air carrier
Aircraft
N477MC
Make and model
Boeing 74747UF
Aircraft serial
29255
Aircraft time
94,688 hours, 16,677 cycles
Part
Switch
Part number
211C117222
Part serial
W51257
Condition
Fault Message
Stage of operation
CR
How discovered
V
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

BLEED 2 EICAS MESSAGE(<P>CMC # 36227 PER FIM TASK # 36-11/940. REMOVED AND REPLACED #2 ENG BLEED AIR OVERPRESSURE SWITCH PER AMM 36-21-03/401. THEN OPERATIONAL TEST WITH ENG RAN, OK PER AMM 71-00-00/501. NO MSG FOUND. A/C OK FOR SVC.<SPAN STYLE="WHITE-SPACE: PRE;"> </SPAN>CMC # 36221. PER FIM TASK # 3611/940. REMOVED AND REPLACED #2 ENG PRV PER AMM 36-11-19/401. THEN OPERATIONAL TEST WITH ENG RAN, OK PER AMM 71-00-00/501. NO EXISTING FAULT MSG FOUND. A/C OK FOR SVC.<SPAN STYLE="WHITE-SPACE: PRE;"> </SPAN></P>)

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