Service difficulty report · Channel · Boeing 7377H4

Difficulty date
June 23, 2022
Submitted
July 29, 2022
Operation
Air carrier
Aircraft
N428WN
Make and model
Boeing 7377H4
Aircraft serial
29844
Aircraft time
66,134 hours, 39,057 cycles
Part
Channel
Condition
Corroded
Location
Aft Cargo
Stage of operation
IN
How discovered
9
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

CORROSION ** AFT CARGO COMPARTMENT BILGE R/H ZEE CHANNEL FLOOR SUPPORT @ S-25R FROM STA 727 TO STA 767 MKD DOT / [01] AFTER CORROSION EVALUATION AT R/H ZEE FOUND SPOTS OUT OF LIMITS AT STA727D TO 767 AS PER B737 -700 SRM 53-00-53-1A-2.( FROM STA 727 THRU STA 727D NO CORROSION NOTICED );[02] FABRICATED NEW RT SIDE ZEE CHANNEL SECTION ( ABOVE STRG 25 RT ) FROM STA 727 TO STA 767 AT AFT CARGO COMPT. AS PER B737-700 SRM 53-00-53-2R-5.;[03] VERIFIED; STEP # 1 AND 2;[04] OK TO TREAT & PRIME NEW R/T SIDE ZEE CHANNEL SECTION;[05] TREATED AND PRIMED NEW RT SIDE ZEE CHANNEL SECTION AT AFT CARGO COMPT. FROM STA 727 TO STA 767 AS PER B737-700 SRM 51-20-01-0G-0 AND AMM 51-21-72-370.;[06] CORECTION FOR STEP 5 : FROM STA 727 D TO STA 767.;[07] CORRECTION FOR STEP 2 : FROM STA 727 D TO STA 767.;[08] VERIFIED RESTORATION.;[09] VERIFIED ALL STEPS;[10] WORK COMPLETED.

More about the Boeing 737-7H4