Service difficulty report · Servo Motor · Boeing 767322

Difficulty date
June 1, 2024
Submitted
June 3, 2024
Operation
Air carrier
Aircraft
N666UA
Make and model
Boeing 767322
Aircraft serial
29238
Aircraft time
86,631 hours, 18,649 cycles
Part
Servo Motor
Part number
P76200A
Condition
Faulted
Location
Autothrottles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AUTOTHROTTLES OCCILATE WITH FLCH VNAV V/S ENGAGED. MOMENTARY A/T DISC LIGHT. CARETS NORM FIM TASK 22-03/803 MCDP GROUND TEST 2 TMC CARRIED OUT, TEST MCDP GROUND TEST 10 - SERVO A/T PERFORMED. TEST SHOWS "TACH L SERVO) PULLED & COLLARED & PLACARDS INSTALLED. REQUESTING AUTOLAND DEGRADED TO LAND 2. MEL 2230C APPLIED, AUTOLAND STATUS - LAND 2. SHOWS "NO INFC TMC - TACH L". FIM TASK 22-05/879 FOLLOWED AND FAIL FWD" & "TACH L FAIL AFT" MESSAGES. CB F16 ON P11 (TMC DEFERRAL OF AUTOTHROTTLE SERVO PER MEL 2230C FOR FURTHER T/S. DISPATCH DESK: 67 NAME: IT DATE: 01-JUN-24- OK TO DEFER AUTOTHROTTLE SERVO