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SDR ASAA2021052535028

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Service difficulty report · Web · Boeing 737990ER

FAA SDR system

Difficulty date
May 25, 2021
Submitted
June 7, 2021
Operation
Air carrier
Aircraft
N486AS
Make and model
Boeing 737990ER
Aircraft serial
44107
Aircraft time
21,366 hours, 6,852 cycles
System (JASC)
5320 · Fuselage Miscellaneous Structure
Part
Web
Part number
65400058
Condition
Corroded
Location
Bs 440-480
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 PIT, CARGO DOOR THRESHOLD WEB IS CORRODED. GROUNDED - YES. REMOVED CORROSION ON WEB. ORIG THICKNESS .045 PER B737-900ER SRM 53-30-15-OI-1; REMOVED .008 MATERIAL; REMAINING MATERIAL .037 TO BE OUT OF LIMITS PER B737-900ER SRM 53-30-15-1A-1. TOOL #T8224K.LOCATED AND DRILLED NEW WEB PER B737-400ER SRM 51-40-05. REMOVED OLD WEB PER B737-900ER SRM 51-40-02. INSTALLED NEW NUTPLATES PER B737-900ER SRM 51-40-02. INSTALLED NEW WEB IAW B737-900ER DWG 143A8120, REV T.