MS178257
NUT
Specifications
- Part Number
- MS178257
- Manufacturer
- —
- ATA ChapterMaintenance system chapter
- 78 — Exhaust
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Consumables / Hardware
- Inventory ClassRotable, expendable, or consumable
- Consumable
- Certification
- PMA
- Aircraft Category
- —
- Criticality
- —
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
80%
Component-change rate (FAA K-code)*
* Structural ATA chapter (57). Verb-based propensity is suppressed because "REPAIRED" in the SDR text typically refers to the airframe being repaired around the part, not the part itself. FAA K-code component-change rate is the honest signal.
- SDR reports
- 5
- Replace events
- 4
- Repair events
- 0
- K-code events
- 4
Reporting window 2000-09-01 – 2021-02-04Dominant chapter ATA 57
Directional indicator only. Reflects what operators reported to the FAA when a difficulty was logged — not a fleet-normalized failure rate or a cost-based BER. Use alongside operator-specific data.
Airframe Applicability(2)
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes2 applicable
AlternatesNone recorded
ClassConsumable
CriticalityUnknown
CategoryUnknown
Know your business mix?
Upload your part numbers and get instant analytics — airframe breakdown, ATA depth, PMA concentration, and more.
Coming SoonSimilar Parts(8)
-13 and 0850712-14
Exhaust Manifold Assy
ATA 78OEM
-13 and 0850712-17
Exhaust Manifold Assy
ATA 78OEM
-189203-7
Stack Assembly
ATA 78OEM
-189204-9
Stack Assembly
ATA 78OEM
-189209
Stack Assembly
ATA 78OEM
-189210
Stack Assembly
ATA 78OEM
-220
Stack Assembly R.H. Outboard
ATA 78OEM
-220
Stack Assembly R.H. Outboard
ATA 78OEM