SDR CA991008005

Service difficulty report · Selector · Piper PA31

Difficulty date: September 25, 1999
Submitted: March 26, 2000
Operation: Air carrier
Make and model: Piper PA31
Engine: Lyc TIO540A2B
Propeller: Hartzl HCE2YR2
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Selector
Part number: 4TL571
Condition: Broke
Location: Te Flap
Part time: 8,173 hours
Component: 41231
Stage of operation: AP
Nature of condition: F
Precautionary procedure: A

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

What was found

(CAN) WHEN ON APPROACH, PILOT SELECTED WING FLAPS, SELECTOR HANDLE BROKE OFF CLOSE TO PIVOT POINT. INSPECTION SHOWS 40 PERCENT DIAMETER OF STEM SHOWS INTERNAL CORROSION; THUS, WEAKENING THE STEM. KNOB P/N: 23943-00. PIPER SWITCH ASSY P/N: 487-839 REPLACED. MICROSWITCH P/N: 4TLS71.

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