90-644-220-1
Cover - Grease Retaining, Spline Coupling
Specifications
- Part Number
- 90-644-220-1
- Manufacturer
- THI Texas Helogistics Inc
- ATA ChapterMaintenance system chapter
- 63 — Main Rotor Drive(s)
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Mechanical
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- PMA
- Aircraft Category
- Unknown
- Criticality
- Standard
Airframe Applicability
No airframe data available for this part.
Data Sources(1)
- 2026-03-07
Quick Facts
AirframesUnknown
AlternatesNone recorded
ClassRotable
CriticalityStandard
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)
90-620-619-1, -3, -5, & -7
Pin, Clutch Pivot
ATA 63PMATHI Texas Helogistics Inc
90-620-665-1
Roller, Pinion, Upper Planetary, Trans.
ATA 63PMATHI Texas Helogistics Inc
90-620-666-1
Roller, Pinion, Upper Planetary, Trans.
ATA 63PMATHI Texas Helogistics Inc
206040190005
HOUSING
ATA 63OEM
222044672101
COUPLING
ATA 63OEM
4638202007
FREEWHEEL UNIT
ATA 63OEM
7665009803103
ROTOR BRAKE
ATA 63
S1635200592
SHAFT
ATA 63OEM