SDR UIEA01023

Service difficulty report · Flap Track · Boeing 747212B

Difficulty date: March 9, 2000
Submitted: April 13, 2001
Operation: Air carrier
Aircraft: N808MC
Make and model: Boeing 747212B
Aircraft serial: 21048
System (JASC): 5753 · Trailing Edge Flaps
Part: Flap Track
Part number: 65B170632
Condition: Corroded
Location: Nr 6 Flap
Part time: 83,608 hours
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

DURING ROUTINE INSPECTION, FOUND NR 6 INBOARD FLAP TRACK REAR SPAR FORWARD AFT ATTACH HOLES CORRODED. CORROSION REMOVED BY MILLING FLANGE THICKNESS TO .8799 AT THE FORWARD HOLES; .8630 AT THE AFT HOLES. FABRICATED NEW BEARING PLATES. REWORK AREA TREATED, PAINTED, FLAP TRACK INSTALLED. (M)

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