SDR A6WA2017022244801

Service difficulty report · B-Nut · Cndair CL6002B19

Difficulty date: February 16, 2017
Submitted: February 22, 2017
Operation: Air carrier
Aircraft: N443AW
Make and model: Cndair CL6002B19
Aircraft serial: 7781
Aircraft time: 32,469 hours, 31,142 cycles
System (JASC): 4930 · APU Engine Fuel and Control
Part: B-Nut
Condition: Leaking
Location: Apu
Stage of operation: DE
How discovered: O
Nature of condition: K, B
Precautionary procedure: O

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

What was found

DURING DESCENT WITH APU OFF AND BOTH PACKS SELECTED TO AUTO, CREW REPORTED STRONG FUEL ODOR IN CABIN AND COCKPIT. PERFORMED VISUAL INSPECTION OF AFT EQUIPMENT BAY AIR CONDITIONING DUCTS, NO DEFECTS NOTED. FOUND A B-NUT FITTING ON APU FUEL CONTROL UNIT LEAKING WHEN APU WAS RUNNING. SHUT OFF APU, NO LEAKS NOTED. CLEANED SPILL AND PERFORMED OPS CHECK OF AIR CONDITIONING SYSTEM WITH ENGINES RUNNING WITH CREW ASSISTANCE. NO FUEL ODOR NOTED FROM PACKS, SYSTEM CHECKS GOOD IAW AMM 2151-00.