Service difficulty report · Skin · Boeing 7472D7B

Difficulty date
May 19, 2011
Submitted
May 20, 2011
Operation
Air carrier
Aircraft
N524MC
Make and model
Boeing 7472D7B
Aircraft serial
21784
Aircraft time
105,248 hours, 21,789 cycles
Part
Skin
Condition
Dented
Location
Nr 1 Nacelle
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

MX FOUND THE NR1 ENGINE INLET NOSE COWL - OUTER BARREL SKIN DENT, MEASURING: 12.0" X 9.0" AND THE DEPTH 0.250 (REF FIG 1), LOCATED APPROX AT 3 O'CLOCK POSITION. THE DAMAGE IS BEYOND THE ALLOWABLE DAMAGE LIMITS IAW SRM 54-31-01, FIG 1, IAW SRM 51-40-06, FIG 2. PERFORMED A DETAIL VISUAL INSP, PENETRATION OR ANY OTHER DEFECTS EXISTS IN THE VICINITY. REMOVE ANY MOSTURE OR CONTAMINATION FROM THE DAMAGED AEA. USE A VACUUM AND HEAT (MAX OF 125A (52AC)) TO REMOVE MOISTURE FROM THE DAMAGED AREA.3 . FILL IN THE DAMAGED AREA (REF FIG 1) WITH BMS 5-28 POTTY COMPOUND OR EQUIVALENT. PROTECT THE DAMAGE FROM ENTRANCE OF WATER, SUNLIGHT OR OTHER FOREIGN MATTER BY APPLYING 3 LAYERS OF ALUMINUM FOIL TAPE OVERLAPPING A MINIMUM OF 1.5 INCHES IAW LAYER. (SPEED TAPE) EXTENDING MINIMUM 2 INCHES OF THE SURROUNDING DAMAGED AREA ON ALL SIDES TO RESTORE OUTER SURFACE CONTOUR)

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