# N99YC: 1997 Enstrom F-28F, registration cancelled 2018-01-24

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 24, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Enstrom F-28F](https://openairdocs.org/model/enstrom-f-28f) (registry code 3300412)
- Engine: [Lycoming HIO-360 series](https://openairdocs.org/engine/lycoming-hio-360-series) (registry code 41524)
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE), [TCDS 1E10](https://openairdocs.org/tcds/1E10) (OpenAirDocs)
- Serial number: 809
- Year built: 1997
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: April 18, 1997
- Certificate issued: December 15, 2004
- Last registry action: December 18, 2007
- Mode S code: ADD273
- Owner when cancelled: [C G Franke And Son LLC](https://openairdocs.org/faa-owner/C%20G%20FRANKE%20AND%20SON%20LLC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7236° N, 75.5412° W: Placed by OpenAirDocs at the center of ZIP code 19801, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N99YC
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=99YC
- Page: https://openairdocs.org/deregistered/N99YC-2018-01-24

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-28F: https://openairdocs.org/model/enstrom-f-28f.md

## Service difficulty reports (3)

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

- [SDR 97ZZZX3759](https://openairdocs.org/sdr/97ZZZX3759), Jun 25, 1997: AMPLIFIER. FAILED. DURING CLIMB-OUT AT 200 FEET AND 60 MPH, THE ENGINE LOST POWER DUE TO THE NR 2 CYLINDER INTAKE VALVE ROCKER ARM SHAFT FALLING OUT OF THE CYLINDER HEAD. THE LOW 
- [SDR 97ZZZX3758](https://openairdocs.org/sdr/97ZZZX3758), Jun 25, 1997: SEAT. DEFORMED. THIN COMPOSIT BENCH SEAT ACROSS 15.50 INCH WIDE ALUMINUM SEAT STRUCTURE. NOT ADEQUATE FOR TWO PASSENGERS. LOSS OF ENGINE POWER WHEN A VALVE ROCKER ARM SHAFT FEL
- [SDR 97ZZZX3551](https://openairdocs.org/sdr/97ZZZX3551), Jun 25, 1997: ROCKER SHAFT. FAILED. LOOSE RETAINING NUTS WORKED OFF STUDS ALLOWING THE PORT COVER TO FALL OFF AND NR 2 CYLINDER INTAKE VALVE ROCKER ARM SHAFT TO FALL OUT OF THE ENGINE RESULTING IN

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX97LA224](https://openairdocs.org/ntsb/LAX97LA224), Jun 25, 1997: Enstrom F-28-F (N99YC), Riverside, CA, substantial damage. Probable cause: failure by unknown maintenance personnel to retorque the nuts on the retainer cover.

## 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.

- [Accident 19970625040829A](https://openairdocs.org/incident/19970625040829A), Jun 25, 1997: Enstrm F28F (N99YC), Riverside, CA, Substantial damage. Engine quit on climbout 200 ft AGL unable auto landed hard. Intake valve rocker shaft came loose. New engine. (.4) during takeoff, the helicopter lost power…

## Other aircraft with N99YC

- [Registered now](https://openairdocs.org/aircraft/N99YC): Enstrom F-28F, S/N 766
- [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N99YC-undated): Piper PA-23, S/N 231163. Triennial form not returned

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