SDR 2000UALA00345

Service difficulty report · Throttle · Boeing 767222

Difficulty date: June 16, 2000
Submitted: October 4, 2000
Operation: Air carrier
Aircraft: N608UA
Make and model: Boeing 767222
Aircraft serial: 21869
Aircraft time: 66,986 hours, 17,221 cycles
Engine: Pwa JT9D7R4D
Engine time: 54,381 hours, 13,745 cycles
System (JASC): 2230 · Auto Throttle System
Part: Throttle
Condition: Malfunctioned
Location: Auto Flight
Stage of operation: DE
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

DESCENDING FROM FL 390 TO FL 350, NR 1 ENGINE DID NOT ACCELERATE WHILE THROTTLE MOVED FORWARD NORMALLY. *S/D* NO CAUSE WAS FOUND FOR THIS DISCREPANCY. MAINTENANCE PERFORMED AN ACCELERATION TEST, AND IT PASSED TEST. AIRCRAFT FLEW SUBSEQUENT FLIGHTS WITH NO DISCREPANCIES.