SDR 99ZZZX1971

Service difficulty report · Seal · Braero BAE125800A

Difficulty date: April 16, 1999
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N800PA
Make and model: Braero BAE125800A
Aircraft serial: NA0438
System (JASC): 2730 · Elevator Control System
Part: Seal
Condition: Failed
Location: Te Flap
Part time: 3,416 hours
Component: Lucas · 614MK2
Stage of operation: IN
Nature of condition: K
Precautionary procedure: K

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

What was found

DURING ROUTINE INSPECTION, THE FLAP CONTROL UNIT OIL RESERVOIR WAS FOUND DRY. WHEN OIL (5606 HYDRAULIC FLUID) WAS ADDED IT IMMEDIATELY STARTED RUNNING OUT THE DRIVESHAFT SEAL. THE FILLER CAP IS ALSO A VENT. THE VENT WAS FOUND PLUGGED. AT ALTITUDE, A PRESSURIZED OIL RESERVOIR COULD BLOW A SEAL. THERE WAS NO INSTRUCTION IN THE INSPECTION PROCEDURE TO CHECK THE VENT. LANDINGS, 2,604.