SDR 20010423CW018

Service difficulty report · Wire · Cessna 421C

Difficulty date: March 20, 2001
Submitted: April 23, 2001
Operation: Air carrier
Aircraft: N171N
Make and model: Cessna 421C
Aircraft serial: 421C0461
Engine: Cont GTSIO520*
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Wire
Condition: Broken
Location: Te Flaps
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

FLAPS FAILED AND TRAVELED BEYOND STOP SWITCHES. ONLY THING THAT WAS FOUND WAS A BROKEN WIRE WHERE THE QUADRENT SWITCHES ARE LOCATED. MANY PARTS HAD TO BE REPLACED. BRACKETS, PULLEYS, RODS CABLES, CHAINS, BELLCRANKS, ACTUATOR AND BOLTS. AFTER REPAIR, OPERATION WAS NORMAL.

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