SDR A6WA201240726

Service difficulty report · Flap System · Cndair CL6002B19

Difficulty date: July 20, 2012
Submitted: August 10, 2012
Operation: Air carrier
Aircraft: N429AW
Make and model: Cndair CL6002B19
Aircraft serial: 7711
Aircraft time: 22,853 hours, 21,952 cycles
Engine: Ge CF343B1
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Flap System
Condition: Malfunctioned
Stage of operation: DE
How discovered: O
Nature of condition: F
Precautionary procedure: O

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

What was found

FLAPS DEGRADED - WHILE DESCENDING THRU 17,000 FT A/P ENGAGED. VERT SPEED SET AT 1500 FPM & SPEED AT 280 KIAS, AIRPLANE PITCHED NOSE-DOWN MOMENTARILY. OVERSPEED TAPE APPEARED ON SPEED TAPE. RECEIVED FLAPS DEGRADED STATUS MESSAGE. RECEIVED HYD PUMP 2B & 3B CAUTION MESSAGES MOMENTARILY. EACH TIME THE OVERSPEED TAPE APPEARED, FLT CONTROLS WOULD FEEL HEAVY WHILE HAND-FLYING. FLAPS WERE AT ZERO WITH NO FLAP HANDLE SELECTIONS WERE MADE. R & R LT FLAP POSITION TRANSMITTER IAW AMM 27-55-01. OPS CHECK GOOD.