Service difficulty report · Tach Generator · Boeing 767332

Difficulty date
June 9, 2011
Submitted
June 10, 2011
Operation
Air carrier
Aircraft
N598HA
Make and model
Boeing 767332
Aircraft serial
23278
Aircraft time
73,174 hours, 32,067 cycles
Part
Tach Generator
Part number
8TJ138AAA4
Part serial
BW0268
Condition
Erratic
Location
Nr 1 Engine
Part time
7,273 hours, 2,390 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

ETOPS SIGNIFICANT SYS - DURING ENGINE START NR1 ENGINE, N1 FLUXUATES ERRACTICALLY. T/S 77-12, FIG 104 R & R N1 TACK GEN IAW AMM 77-12-02. WRANG WIRING IAW WD 77-12-11. NO PR'S NOTED. R & R EEC, N1 CKD GOOD, IAW AMM 73-21-11. OPS CKD GOOD.