SDR UIEA2021012400112

Service difficulty report · Switch · Boeing 7673Y0

Difficulty date: January 25, 2021
Submitted: January 29, 2021
Operation: Air carrier
Aircraft: N1181A
Make and model: Boeing 7673Y0
Aircraft serial: 26206
Aircraft time: 89,304 hours, 22,458 cycles
Engine: Ge CF680C2B7F
System (JASC): 7714 · Engine RPM Indicating System
Part: Switch
Part number: NPN
Part serial: NSN
Condition: Failed
Location: Engine N1 Gauge
Stage of operation: CL
How discovered: V
Nature of condition: J
Precautionary procedure: A, D

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

What was found

REV DISPLAYED ABOVE LEFT ENGINE N1 GAUGE NORMAL REVERSE WORKED ON LANDING. TRANSFERED TO MDDR 141401, IAW MEL 78-31-01 CAT C, DUE 04FEB21 PLACARD INSTALLED MX PROCEDURE C/W. REMOVED NR 1 TR OUTBOARD SWITCH, PER B767 AMM 78-36-01 AND REPLACED W/78-36-01. OPERATIONS CHECK GOOD. THIS CLEARS DMI 141481.

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