Service difficulty report · Shear Tie · Boeing 7377H4

Difficulty date
November 24, 2021
Submitted
January 6, 2022
Operation
Air carrier
Aircraft
N770SA
Make and model
Boeing 7377H4
Aircraft serial
30589
Aircraft time
69,290 hours, 41,022 cycles
Part
Shear Tie
Condition
Cracked
Location
Bs 225
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FOUND SHEAR TIE CRACKED AT FLIGHT DECK STA 225 RBL 40 ; / [01] INSTALLED EWS PROTECTION AT FLIGHT DECK R/H SIDE BETWEEN STA 220 AND STA 230 REF B737-700 AMM 20-60-07-913-801.; [02] REMOVED DAMAGE SHEAR TIE AT FLIGHT DECK R/H SIDE BETWEEN STA 219.8 AND STA 224.8 WL 208 REF B737-700 SRM 51-40-02-0G-0.; [03] FABRICATED AND HEAT TREATED NEW SHEAR TIE MATERIAL USED 2024-O 0.040' PO# 1732885. REF DWG# 141A5137 AND FORM OP 84.; [04] LOCATED AND DRILLED NEW SHEAR TIE AT FLIGHT DECK R/H SIDE BETWEEN STA 219.8 AND STA 224.8 WL 208 REF B737-700 SRM 51-40-05-0G-0 AND DWG# 141A0640.; [05] VERIFIED 1-4. OK TO TREAT AND PRIME.; [06] TREATED AND PRIMED NEW SHEAR TIE REF B737-700 SRM 51-20-01-0G-0.; [07] VERIFIED 6. OK TO INSTALL SHEAR TIE.; [08] INSTALLED NEW SHEAR TIE AT FLIGHT DECK R/H SIDE BETWEEN STA 219.8 AND STA 224.8 WL 208 REF B737-700 SRM 51-40-05-0G-0 AND DWG# 141A0640.; [09] STEP #8 SRM REF 51-40-02-0G-0.; [10] REMOVED AND REPLACED SHEAR TIE AT FLIGHT DECK R/H SIDE BETWEEN STA 219.8 AND STA 224.8 WL 208 REF B737-700 SRM 51-40-02-0G-0 AND DWG# 141A0640.; [11] REMOVED EWIS PROTECTION AT FLIGHT DECK R/H SIDE BETWEEN STA 220 AND STA 230 REF B737-700 AMM 20-60-07-913-801.; [12] VERIFIED STEPS 10;11.

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