Service difficulty report · Structure · Boeing 737990

Difficulty date
December 2, 2012
Submitted
December 5, 2012
Operation
Air carrier
Aircraft
N306AS
Make and model
Boeing 737990
Aircraft serial
30014
Aircraft time
42,358 hours, 16,376 cycles
Part
Structure
Part number
143A7501164
Condition
Corroded
Location
Bs 500h-500l
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

FWD CARGO BAY LEFT TRANSITION PANEL CORRODED NUMEROUS PLACE. BS 500H - 500L, STR 26L. REMOVED CORROSION AND CHECKED LIMITS. ORIGINAL THICKNESS IN ALL AREAS IS .040. REMAINING THICKNESS FROM 500H 5 IS .038, .002. REMOVED REMAINING THICKNESS FROM 500I TO 500J IS .037 .003 REMOVED. REMAINING THICKNESS FROM 500J TO 500K IS .037, .003 WAS REMOVED. REMAINING THICKNESS FROM 500K TO 5R00 K 10 IS .038, .002 WAS REMOVED. 500K 10 TO 500L FOUND TO BE OUT OF LIMITS. ALODINED AND PRIMED H5 TO 500K 10 REF SRM 51-20-01. PAINTED AND IDENTIFIED 500 H 5 TO 500K 10 REF AMM 51-21-99, 51-05-01. FABRICATED AND INSTALLED REPAIR FROM 500K 10 TO 500L REF SRM 53-00-53.