Service difficulty report · Contactor · Boeing 76731K

Difficulty date
September 23, 2020
Submitted
September 28, 2020
Operation
Air carrier
Aircraft
N1489A
Make and model
Boeing 76731K
Aircraft serial
27206
Aircraft time
108,026 hours, 21,429 cycles
Part
Contactor
Part number
B4291
Part serial
CL16925
Condition
Failed
Location
Generator
Stage of operation
TX
How discovered
C
Nature of condition
L
Precautionary procedure
D

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

What was found

ON TRANSFER RIGHT GEN WILL NOT POWER LEFT A/C. REMOVED AND REPLACED BTB, IAW AMM 24-22-03. OPS CHECK NO HELP S/N OFF: CL17588, P/N OFF: B430-1. REPLACED LEFT TRANSFORMER RECTIFIER TRU, REFER TO ITEM 1. NO HELP S/N OFF: 2550, P/N OFF: 4-273-03. REPLACED LEFT GCB C901, NO HELP, REF AMM 24-23-01. S/N OFF: CL 17588, P/N OFF: B-430-1. ITEM M3: DURING T/S FOUND NO CONTINUITY ON PINS 17-18, K114, PER SSM 24-20-02. R & R K114, IAW AMM 24-41-01, PERFORMED CONTACTOR INSTALLATION TEST, IAW AMM 24-41-01, NO DEFECT NOTED. S/N OFF: CL-16925, P/N OFF: B429-1.

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