N503H1975 Enstrom F-28C
This N-number isn't registered right now. Below is its last known registration, canceled Oct 23, 2018.
Safety record in brief:No NTSB accidents or incidents since 19826 ADs may apply1 service difficulty report
- Registration
- Deregistered
Registration
FAA Aircraft Registry · Oct 17, 2026- Last registered owner
- Cozumel Leasing LLC
- Owner type
- Corporation
- City, state
- Wilmington, DE
- Certificate issued
- May 31, 2012
- Canceled
- Oct 23, 2018
- Airworthiness
- Standard
- Airworthiness date
- Apr 11, 1977
We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.
Airframe & engine
FAA Registry + type dataAirframe
- Manufacturer
- Enstrom
- Model
- F-28C
- Year
- 1975
- Serial number
- 304
- Aircraft type
- Rotorcraft
- Category
- Land
- Certification
- Type Certificated
- Seats
- 3
- Engines
- 1
- Max takeoff weight
- Up to 12,499 lb
- Type certificate data sheet
- H1CE
- Mode S code
- A645C4
Engine
- Make and model
- Lycoming I0360 Ser
- Type
- Reciprocating
- Power
- 180 hp
Total time and engine hours aren't public. They appear here once the owner adds logbooks.
Ownership history
Ownership history from FAA records- 2012 – 2018Cozumel Leasing LLCWilmington, DE
Individual owners are shown by city and state only.
Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 17, 2026 · SDRs · Oct 16, 2026NTSB events (0)
No NTSB accidents or incidents found for this airframe since 1982.
Accident history for this modelADs published since 1998 that may apply (6)
These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 2018-02-01 | The Enstrom Helicopter Corporation Helicopters | Feb 21, 2018 | Airframe (F-28C)Certain serial numbers: 480 5001–5006. Only with: With main rotor spindle P/N 28-14282-11 or 28-14282-13 installed. |
| 2017-26-03 | The Enstrom Helicopter Corporation Helicopters | Jan 4, 2018 | Airframe (F-28C)Only with: Rod end bearing assembly P/N 01-824-08E-011, 09455-01-824-08E-011, ECD091-1, ASMK8T, M81935/1-08K, MS21242S8K, or MTK8 installed. |
| 2012-11-05 | Enstrom Helicopter Corporation Helicopters | Jul 3, 2012 | Airframe (F-28C)Only with: Helicopters with trim relay P/N KUP14D55-24, KUP14D55-472, M83536/10-015M, or M83536/10-024M installed; does not apply to helicopters with reversible trim motor P/N 28-16621 or P/N AD1R-10. |
| 2011-26-10 | Enstrom Helicopter Corporation Helicopters | Jan 23, 2012 | Airframe (F-28C)Only with: Helicopters with a trim relay P/N KUP14D55-472, M83536/10-015M, or M83536/10-024M installed; does not apply to helicopters with reversible trim motor P/N 28-16621 or AD1R-10. |
| 2002-08-03 | Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, and… | May 2, 2002 | Airframe (F-28C) |
Show all 6 ADsShow fewer ADs
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 96-06-03 | The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C… | Mar 19, 1996 | Airframe (F-28C) |
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (1)
Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.
- Ignition · contact points · worn followerSep 4, 1995
ENGINE FAILED DUE TO BOTH SETS OF POINTS FAILING TO OPEN CAUSED BY EXCESSIVE WEAR OF PLASTIC CAM FOLLOWERS. SUSPECT LACK OF LUBRICATION AS NO OIL FOUND ON CAM OR IN FELT WIPER PADS. SUBMITTER SUGGESTS CHECK AND LUBE ON 100-HOUR INSPECTION.
From FAA Service Difficulty Reports; matched by N-number and serial number.
Sources
- FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 17, 2026
- NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
- FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 17, 2026
- FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026