What was found
SMOKE IN CABIN, AC HOSE ASSY HAD SPIRAL WRAP ON IT THAT CONTACTED HEATER SYSTEM FITTING BETWEEN TUBES PN: S-9402EC-17 AND S-9402EC-12 WHICH MELTED AND IS SUSPECTED TO HAVE CAUSED THE SMOKE IN CABIN EVENT.
- Difficulty date
- November 26, 2025
- Submitted
- December 1, 2025
- Operation
- Air carrier
- Aircraft
- N870AE
- Make and model
- Bell 407
- Aircraft serial
- 56443
- Aircraft time
- 100 hours
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Hose
- Part number
- S5056ECH1
- Condition
- Melted
- Location
- Zone 100
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.