Service difficulty report · Spar · Boeing 7377H4

Difficulty date
May 18, 2018
Submitted
February 14, 2022
Operation
Air carrier
Aircraft
N717SA
Make and model
Boeing 7377H4
Aircraft serial
27851
Aircraft time
69,992 hours, 41,449 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Corroded
Location
Right Wing
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

RH WING TRAILING EDGE; AFT SPAR HAS CORROSION AT AFT BOOST PUMP LOWER BONDING WIRE ATTACH POINT IRSS 142 - 146; MARKED. / REMOVED CORROSION ON R/H REAR SPAR AT LOWER BOOST PUMP BONDING WIRE ATTACH POINT IRSS 142-146. VERIFIED MATERIAL LOSS. ORIGINAL MATERIAL IS .680 REMAINING .0575; LOSS OF .105; OUT OF LIMITS IAW SRM 57-20-10-1A-3. REPAIRED IAW AAR EA 180287 IR AND SWA EA 1-757-15213 REV IR

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