SDR GTIA010902

Service difficulty report · Nose Bullet · Doug DC982

Difficulty date
September 15, 2001
Submitted
October 15, 2001
Operation
Air carrier
Aircraft
N957AS
Make and model
Doug DC982
Aircraft serial
49126
Engine
Pwa JT8D217
Part
Nose Bullet
Part number
5930646505
Condition
Damaged
Location
Engine
Stage of operation
CR
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

AUTOTHROTTLES OFF AND EQUAL ERP, THE LEFT EPR VALUE DECREASES .11 AND THE RIGHT EPR INITIALLY INCREASES .02 THEN DECREASES .03 LEAVING AN EPR SPLIT OF .08 N1 AND N2 BOTH CHANGE BY APPROXIMATELY EQUAL AMOUNT. WITH AUTOTHROTTLES ON AND SYNC ON THE EPR SPLIT IS .16 (N1 AND N2 ARE MATCHED) WITH ENGINE ANTI-ICE ON FOR ABOVE CONDITIONS. CHANGED IN EPR NOTED ABOVE OCCUR WHEN ENGINE ANIT-ICE IS TURNED ON. CRUISE AUTOTHROTTLES/SYNC AND ENGINE ANTI-ICE ON THE RIGHT EPR IS AT MAXIMUM/BOTH N1'S MATCHED AUTHOTHROTTLES UNABLE TO MAINTAIN .76M (FL350) UNLESS AUTOTHROTTLES ARE TURNED OFF AND LEFT THROTTLE ADVANCED. FOUND HOLE IN NR 2 NOSE BULLET REMOVED AND REPLACED IAW MM CH 71-00-00. (M)

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