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SDR SWAA2023052229353

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Service difficulty report · Channel · Boeing 737752

FAA SDR system

Difficulty date
April 20, 2023
Submitted
May 22, 2023
Operation
Air carrier
Aircraft
N7835A
Make and model
Boeing 737752
Aircraft serial
34294
Aircraft time
57,926 hours, 30,275 cycles
System (JASC)
5320 · Fuselage Miscellaneous Structure
Part
Channel
Condition
Corroded
Location
Zn 100 Fus Lower
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 FOUND AFT CARGO RH 'Z' CHANNEL FROM STA 727 TO STA 767 RBL 21 WL 155.5 HAS MULTIPLE SPOTS OF CORROSION.<[01] REMOVED CORROSION AT AFT CARGO RH 'Z' CHANNEL FROM STA 727 TO STA 767 RBL 21 WL 155.5 AS PER SRM 51-10-02-0G-0. ORIGINAL TICKNESS 0.040'; MATERIAL LOST 0.014'; MATERIAL REMAINING 0.026'. FOUND OUT OF LIMITS AS PER SRM 53-00-53-1A-2. INSTALLED NEW AFT CARGO R/H 'Z' CHANNEL PER B 737-700 SRM 51-40-02-0G-0 AND DWG 146A7502.;[02] VERIFIED AND INSPECTED REMOVED CORROSION AT AFT CARGO RH 'Z' CHANNEL FROM STA 727 TO STA 767 RBL 21 WL 155.5 AS PER SRM 51-10-02-0G-0. ORIGINAL TICKNESS 0.040'; MATERIAL LOST 0.014'; MATERIAL REMAINING 0.026'. FOUND OUT OF LIMITS AS PER SRM 53-00-53-1A-2. INSTALLED NEW AFT CARGO R/H 'Z' CHANNEL PER B 737-700 SRM 51-40-02-0G-0 AND DWG 146A7502.