# N503H: 1975 Enstrom F-28C, registration cancelled 2018-10-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 23, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Enstrom F-28C](https://openairdocs.org/model/enstrom-f-28c) (registry code 3300407)
- Engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515)
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE), [TCDS 1E10](https://openairdocs.org/tcds/1E10) (OpenAirDocs)
- Serial number: 304
- Year built: 1975
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: April 11, 1977
- Certificate issued: May 31, 2012
- Last registry action: February 1, 2015
- Mode S code: A645C4
- Owner when cancelled: [Cozumel Leasing LLC](https://openairdocs.org/faa-owner/COZUMEL%20LEASING%20LLC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.8187° N, 75.5062° W: Placed by OpenAirDocs at the center of ZIP code 19810, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N503H
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=503H
- Page: https://openairdocs.org/deregistered/N503H-2018-10-23

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Enstrom F-28C: https://openairdocs.org/model/enstrom-f-28c.md

## Service difficulty reports (1)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 95ZZZX5535](https://openairdocs.org/sdr/95ZZZX5535), Sep 4, 1995: CONTACT POINTS. WORN FOLLOWER. 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 O

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19881118062959I](https://openairdocs.org/incident/19881118062959I), Nov 18, 1988: Enstrm F28A (N503H), Jones Beach, NY. Precautionary landing due to low fuel. Found a leaking fuel tank. Replaced fuel tank.

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