Service difficulty report · Skin · Boeing 737890

Difficulty date
March 20, 2021
Submitted
March 29, 2021
Operation
Air carrier
Aircraft
N588AS
Make and model
Boeing 737890
Aircraft serial
35685
Aircraft time
47,798 hours, 14,246 cycles
Part
Skin
Part number
146A3201
Condition
Corroded
Location
Bs 727f-887
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

LAP AT STR-23L HAS MULTIPLE AREAS OF CORRONSION BETWEEN STA 727F AND STA 887 GROUNDED - YES. EVALUATED STE 23L STA 727F TO 887 AND REMOVED CORROSION AND REPAIRED IAW ALASKA AIRLINES EA NO 800-53EA-23333. THIS IS A CAT B REPAIR. THIS REPAIR IS APPROVED FIRST STAGE AND SECOND STAGE APPROVAL (APPROVED FOR STATIC STRENGTH AND INSPECTION THRESHOLD) THE INSPECTION THERESHOLD FOR THIS REPAIR IS PROVIDED BUTFULL COMPLIANCE TO CFE 25.571 (B) (25-45) AND 26.43 (D) HAS NOT BEEN EVALUATED. NEW FAA APPROVED DATA WHICH CONTAINS THE INSPECTION REQIREMENTS MUST BE ISSUED FINDING COMPLIANCE WITH 14 CFR 25.571 (B)(25-45) PRIOR TO THE INSPECTION THRESHOLD OF 50,000 TOTAL FLIGHT CYCLES. IF THE NEW FAA APPROVAL FOR FULL COMPLIANCE TO 14 CFR 25.571 (B)(25-45) IS NOT INCORPERATED BY THE THRESHOLD, THE AIRWORTHINESS CERTIFICATE OF THE AIPLACE WITH THIS REPAIR IS NO LONGER CURRENT AFTER THAT TIME. W- 1.0", O- .071, R- .066, L-88", D- .005