- Difficulty date
- September 10, 2018
- Submitted
- September 12, 2018
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35183
- Aircraft time
- 44,536 hours, 13,521 cycles
- Part
- Plenum
- Part number
- 22156291
- Condition
- Delaminated
- Location
- Ac Bay
- 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
DURING LT HEAT EXCHANGER WASH FOUND LT PRIMARY HEAT EXCHANGER PLENUM DELAMINATED ALONG I/B EDGE OF ACCESS HOLE. GROUNDED - YES. REMOVED LT HEAT EXCHANGER AND PLENUM DIFFUSER ASSEMBLY (PRIMARY) REF AMM 21-51-03. INSTALLED LT PRIMARY HEAT EXCHANGER & PLENUM DIFFUSER ASSEMBLY REF AMM 21-51-03. ACCOMPLISHED TASK AMM 21-51-03-400-804-002. LEAK CHECK GOOD. OPS CHECK GOOD.