SDR 99ZZZX3706

Service difficulty report · Push Rod · Boeing 747122

Difficulty date: August 22, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N852FT
Make and model: Boeing 747122
Aircraft serial: 19757
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Push Rod
Condition: Failed
Location: Te Flap
Stage of operation: IN
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

DURING WALK-AROUND INSPECTION, NR 3 FAIRING CANOE WAS FOUND PIERCED WITH FLAP PUSH ROD. ON INVESTIGATION AFTER DROPPING THE FLAPS (T/E), FOUND THE FLAP PUSH ROD HAD SHEARED ON THE FORWARD END. THE BROKEN PUSH ROD PIERCED THE FAIRING DURING FLAP RETRACTION. PRELIMINARY INSPECTION FOUND PUSH ROD ON NR 4 FAIRING ALSO DAMAGED. PUSH RODS REMOVED AND REPLACED PER PAC MM AND AIRCRAFT RETURNED TO SERVICE.