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 Alternatives
No PMA alternatives found for this part. This does not mean none exist — only that none are currently in our database.
Supplemental Type Certificates5 found
FAA-approved modifications that reference this part number
Increase maximum ramp weight to 7140 pounds, increase takeoff weight to 7105 pounds and the addition of optional McCauley model 3AF32C515/82NLA-4.0 or Hartzell model PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/FC7663DB-2Q propellers..
Aircraft: 414A
Increase maximum ramp weight to7140 pounds and maximum takeoff weight to 7105 pounds, and the addition of optional McCauley model3AF32C515/82NLA04 propellers.
Aircraft: 414A
Installation of Teledyne TCM TSIOL-550A engines, increase takeoff weight to 7105 lbs., and the installation of McCauley 3AF36C514/80VFM propellers.
Aircraft: 414A
Increase maximum ramp weight from 6750 to 7140 pounds and maximum takeoff weight to 7105 pounds, and addition of optional McCauley model 3AF32C515/82NLA-4.0 propellers.
Aircraft: 414A
Increase maximum ramp weight from 6750 to 7140 pounds and maximum takeoff weight to 7105 pounds, and addition of optional McCauley model 3AF32C515/82NLA-4.0 propellers.
Aircraft: 414A
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 |
|---|---|---|---|---|
| 1660-00-925-7592 | BELLOWS ASSY,VALVE | 1660 | $50.22/EA | 88535ESSEX INDUSTRIES, INC. DBA ESSEX INDUSTRIES |
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
ESSEX INDUSTRIES, INC. DBA ESSEX INDUSTRIES
Source
DLA WebFLIS
ATA Chapter
21
Type
OEM