Service difficulty report · Stringer · Boeing 73779P

Difficulty date
June 10, 2023
Submitted
July 7, 2023
Operation
Air carrier
Aircraft
N7827A
Make and model
Boeing 73779P
Aircraft serial
28255
Aircraft time
57,742 hours, 36,958 cycles
Part
Stringer
Part number
UNKNOWN
Condition
Cracked
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

CRACK ON STR28R LOCATED BTW BS312 TO BS328 AT EQUIPMENT ELECTRONIC COMP 2023-365685<[01] TOOL USED: ULTRASONIC THICKNESS GAGE; P/N: 45MG; S/N: 221860711; DUE DATE: 07 NOV 23.;[02] TOOLS USED: TEMPERATURE CONTROLLER: P/N P3015GOES00000; S/N 142811020; DUE DATE: 25-JAN-24; TEMPERATURE CONTROLLER: P/N P3015GOES00000; S/N 112811019; DUE DATE: 25-JAN-24.;[03] REPLACED STRINGER SECTION 28R AND FASTENERS LOCATED BTW STR 27R TO STR28R BTW BS294.5 TO BS 328 AT EQUIPMENT ELECTRONIC COMP IAW B737-700 SRM 53-10-03-01-1 AND SRM 51-10-02 STEP 9. SEE SEE INDIVIDUAL SING-OFFS BELOW;[04] TASK CARD COMPLETED <BR>REPLACED STRINGER SECTION 28R AND FASTENERS LOCATED BTW STR 27R TO STR28R BTW BS294.5 TO BS 328 AT EQUIPMENT ELECTRONIC COMP IAW B737-700 SRM 53-10-03-01-1 AND SRM 51-10-02 STEP 9. SEE SEE INDIVIDUAL SING-OFFS BELOW<BR>RII

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