# N4391S: 1999 Desruisseaux Steven 1998 SEAREY

- Status: Valid registration
- Airframe: [Desruisseaux Steven 1998 SEAREY](https://openairdocs.org/model/desruisseaux-steven-1998-searey) (registry code 056058T, 2 seats)
- Engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050)
- Serial number: 1MK157
- Year built: 1999
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 21, 1999
- Certificate issued: March 13, 2024
- Expires: March 31, 2031
- Mode S code: A54719
- Registered owner: [Prince Nathan Ryan](https://openairdocs.org/faa-owner/PRINCE%20NATHAN%20RYAN)
- Location: [Stafford Springs, CT](https://openairdocs.org/faa-place/CT/Stafford%20Springs)
- Owner type: Individual
- Owner's area on the map: 41.9844° N, 72.2635° W: Placed by OpenAirDocs at the center of ZIP code 06076, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4391S
- Page: https://openairdocs.org/aircraft/N4391S

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Desruisseaux Steven 1998 SEAREY)

None in force.

### Matched by engine (Bombardier ROTAX (ALL))

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4391S.

## 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 19990424014429I](https://openairdocs.org/incident/19990424014429I), Apr 24, 1999: Amtr SEAREY (N4391S), Milton, FL, Minor damage. On April 24 Mr. Steven desruisseaux was flying his recently completed "Searey" amphibious experirmental airplane operation under 14 CFR 91. On the second water…

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## Service difficulty reports on N4391S not matched to an aircraft (5)

They name N4391S, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR HEEA966525](https://openairdocs.org/sdr/HEEA966525), Jan 26, 1996: WARNING BOX. DEFECTIVE. WARNING BOX WARNING HORN STAYS ON BELOW 75%. SENT
- [SDR HEEA966442](https://openairdocs.org/sdr/HEEA966442), Jan 15, 1996: SHAFT SEAL. LEAKING. SHAFT SEAL LEAKING IN FLIGHT. NO STATIC LEAK.
- [SDR HEEA955851](https://openairdocs.org/sdr/HEEA955851), Oct 5, 1995: INDICATOR. FACE BROKEN. GLASS BROKEN ON FACE OF INDICATOR. REPLACED BROKEN LENS, REPAIRED. PERFORMED COMPLETE ALIGNMENT AND CALIBRATION. BENCH CHECK GOOD.
- [SDR HEEA955323](https://openairdocs.org/sdr/HEEA955323), Jul 6, 1995: LORAN. DEFECTIVE. ENTER BUTTON IS INTERMITTENT.
- [SDR HEEA954613](https://openairdocs.org/sdr/HEEA954613), Mar 23, 1995: SHAFT SEAL. LEAKING. IN CRUISE FLIGHT, DEVELOPED LEAK FROM BOTTOM OF TRANSMISSION. REPLACED SEAL DUE TO SLIP RING RETAINER LEAKING.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Desruisseaux Steven 1998 SEAREY aircraft: https://openairdocs.org/model/desruisseaux-steven-1998-searey/aircraft.md
- The Bombardier ROTAX (ALL) engine: https://openairdocs.org/engine/bombardier-rotax-all.md

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