Service difficulty report · Skin · Fokker F28MK1000

Difficulty date
October 2, 2005
Submitted
November 1, 2005
Operation
General aviation
Make and model
Fokker F28MK1000
Aircraft time
24,651 hours
Engine
Rroyce SPEY55515
Part
Skin
Condition
Cracked
Location
Emergency Door
Part time
27,602 cycles
Stage of operation
IN
How discovered
9
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 SERVICE CHECK, 13 INCH CRACK DISCOVERED ON EXTERNAL SKIN OF FWD SERVICE/EMERGENCY DOOR. NO REPLACEMENT DOOR WAS IN STOCK. REPAIRS WERE COMPLETED AS PER STRUCTURAL REPAIR MANUAL. THIS AREA IS COVERED BY STRUCTURAL INSPECT PROGRAM WHICH IS COMPLETED EVERY 2000 CYCLES AND WAS DUE WITHIN 70 CYCLES. FOKKER SERVICES HAVE BEEN CONTACTED FOR THEIR RECOMMENDATION REGARDING INSPECTION LVL AND FREQ. ALL INITIAL FINDINGS ON SIP-1 ITEM 52-40-01 ARE FOUND WELL ABOVE INITIAL INSPECT AT 18700 CYCLES. IN MAJORITY OF FINDINGS, CRACK SIZE IS IN BETWEEN 8 AND 11 INCH. CRACK GROWTH CALCULATIONS (50 MM - 250 MM) DO SHOW A RAPID GROWTH. HOWEVER, TAKING INTO ACCOUNT A SCATTER FACTOR OF 3, 3200 CYCLE INTERVAL SHOULD COVE

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