Service difficulty report · Pressure Blkhd · Boeing 737924ER

Difficulty date
January 28, 2020
Submitted
February 2, 2020
Operation
Air carrier
Aircraft
N75436
Make and model
Boeing 737924ER
Aircraft serial
33531
Aircraft time
35,612 hours, 12,342 cycles
Part
Pressure Blkhd
Part number
111A1111
Condition
Cracked
Location
Bs 663
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

R/H CENTER WING REAR SPAR VERTICAL PRESSURE WEB HAS APPROX 25" CRACK AT RBL42 R/H VERTICAL PRESS WEB HAS BEEN REPAIRED IAW SRM 57-10-10 REP 3 ALT 2 INSP THRESHOLD AT 56000 FLT CYCS AFTER REPAIR FOLLOWED BYREPEAT INSPS AT EACH SUBSEQUENT 36000 FLT CYCS PER TABLE 205 R/H VERTICAL PRESS WEB HAS BEEN REPAIRED IAW SRM 57-10-10 REP 3 ALT 2 INSP THRESHOLD AT 56000 FLT CYCS AFTER REPAIR FOLLOWED BYREPEAT INSPS AT EACH SUBSEQUENT 36000 FLT CYCS.