Service difficulty report · Skin · Boeing 747446

Difficulty date
March 6, 2011
Submitted
March 18, 2011
Operation
Air carrier
Aircraft
N458MC
Make and model
Boeing 747446
Aircraft serial
26356
Aircraft time
27,173 hours, 1,500 cycles
Part
Skin
Condition
Damaged
Location
Bs 385 S31l
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

THE LIGHTNING STRIKE DAMAGE TO 65B07656-259 SKIN WAS DETECTED AT BS 385 AND S31AL. THE DEPTH OF LIGHTNING STRIKE DAMAGE WAS .015 INCHES AS RECORDED IAW SIAEC NRC 005380. (THE LIGHTNING STRIKE DAMAGED AREA WAS LOCALIZED IN 65B07656-259 SKIN ONLY. THE LIGHTNING STRIKE DAMAGED AREA WAS TRIMMED FROM THE .063 INCH THICK 65B07656-259 SKIN BY ENCOMPASSING THE LIGHTNING STRIKE DAMAGE IN A FWD TO AFT RECTANGLE MEASURING, APPROX 2.0 INCHES IN LENGTH AND 1.2 INCHES IN WIDTH. FOR EASE OF REMOVING THE DAMAGED AREA FROM 65B07656-259 SKIN, THE SAME ADJACENT AREA WAS ALSO TRIMMED FROM THE .071 INCH THICK 65B07656-237 DOUBLER.