SDR DHL97801004

Service difficulty report · O Ring · Doug DC873F

Difficulty date: July 29, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N801DH
Make and model: Doug DC873F
Aircraft serial: 46033
System (JASC): 2710 · Aileron Control System
Part: O Ring
Part number: NAS1612
Condition: Failed
Location: Rt Aileron
Stage of operation: AP
Nature of condition: K, J
Precautionary procedure: L

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

What was found

HYDRAULIC PRESSURE DROPPED TO ZERO, PERFORMED ABNORMAL PROCEDURE, AUX PUMP ON, HYD SYSTEM INDICATED FULL. AUX PRESSURE 2500 PSI. FOUND O-RING ON RT AILERON POWER PACK DETERIORATED AND LEAKING. REPLACED O-RING SERVICED HYDRAULIC SYSTEM. SYS OPS NORMAL.

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