Where to Buy
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Documentation
General information based on part classification, not a certification determination. Your operator's quality manual governs.
What to ask the seller for
- FAA Form 8130-3 from the PAH or an authorized release traceable to the PAH
- Manufacturer's CofC if a Form 8130-3 was not issued
Governing reference: FAA Order 8130.21J
PMA Alternatives3 found
| PMA Part # | Manufacturer | Supplement | Approved | Source |
|---|---|---|---|---|
| SL73857A P010 Ring, Oil Control | Superior Air Parts Inc | 290 | 2021-01-25 | — |
| SL73857A P020 Ring, Oil Control | Superior Air Parts Inc | 290 | 2021-01-25 | — |
| AEL73857 (and oversizes up to .010) Ring Assy, Oil Control | Airmotive Engineering Corp | 1 R1 | 2006-10-17 | — |
Supplemental Type Certificates1 found
FAA-approved modifications that reference this part number
Grinding of high compression NITRIDED Cylinders to .010 oversize, as an alternative to chrome plating or rebarreling, and the installation of SL10207 P10 Piston, SL74241 P10 Top and second compression ring, and SL 73857 P10 oil control ring
Aircraft: AEIO-540-L1B5, AEIO-540-L1B5D, AEIO-540-L1D5, AIO-360-A1A +123 more
Airworthiness Directives
Synced 40 days ago (09/27/2026)No Active Airworthiness Directives
No FAA or EASA ADs are linked to this part number. Always verify against the aircraft's maintenance records before install.
Service Difficulty Reports
No Service Difficulty Reports
No failure reports found for this part number in the FAA SDR database.
Suspect-Parts Alerts (SUP/UPN)
No Suspect-Parts Alerts
This manufacturer is not named in any active FAA Suspect Unapproved Parts (SUP/UPN) notification.
NSN Cross-References1 NSN — DLA WebFLIS
National Stock Numbers assigned to this part number by the U.S. Defense Logistics Agency
| NSN | Standardized Name | FSC | DLA List Price (gov't catalog) | CAGE / Manufacturer |
|---|---|---|---|---|
| 2810-00-077-8736 | RING,PISTON,OIL RES | 2810 | — | 80254TEXTRON LYCOMING INC WILLIAMSPORT PLANT |
DLA PUBLOG published list price — government procurement catalog, not a commercial market price. Prices may differ from current commercial availability.
Government Award Prices
U.S. government contract award prices from FPDS — unit prices for NSN purchases by DoD/DLA agencies
No government contract award price data found for this part number.
Identifiers
Manufacturer
TEXTRON LYCOMING INC WILLIAMSPORT PLANT
Source
DLA WebFLIS
ATA Chapter
—
Type
OEM