# N401HT: 1986 Cessna S550

- Status: Valid registration
- Airframe: [Cessna S550](https://openairdocs.org/model/cessna-s550) (registry code 2076607, 8 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE) (Textron Aviation Inc.) (OpenAirDocs)
- Serial number: S5500115
- Year built: 1986
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: November 1, 1986
- Certificate issued: March 1, 2021
- Expires: March 31, 2028
- Mode S code: A4B119
- Registered owner: [Tailwinds LLC](https://openairdocs.org/faa-owner/TAILWINDS%20LLC)
- Location: [Houston, TX](https://openairdocs.org/faa-place/TX/Houston)
- Owner type: LLC
- Owner's area on the map: 29.6462° N, 95.2771° W: Placed by OpenAirDocs at the center of ZIP code 77061, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=401HT
- Page: https://openairdocs.org/aircraft/N401HT

From the FAA registry file of October 21, 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): 18 in force

### Matched by airframe (Cessna S550)

- [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023
- [AD 2015-17-12](https://openairdocs.org/ad/2015-17-12): Air conditioning · Freon air conditioning system (Textron STC SA3849SW or 3 others). Effective Sep 29, 2015
- [AD 2013-09-11](https://openairdocs.org/ad/2013-09-11): Air Conditioning · Cessna 500, 501, 550 and 5 more. Effective Jul 5, 2013
- [AD 2006-16-18 R1](https://openairdocs.org/ad/2006-16-18-R1): Installing a warning placard on the TAWS/RMI · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 100 more. Effective Jul 18, 2008
- [AD 2007-11-17](https://openairdocs.org/ad/2007-11-17): Wires for the positive and negative terminal studs of the engine and/or auxiliary power unit (APU) fire extinguishing bottles. · Cessna 500, 501, 550 and 5 more. Effective Jul 6, 2007
- [AD 2006-06-03](https://openairdocs.org/ad/2006-06-03): Airplane flight manual (AFM) · Cessna 500, 501, 550 and 3 more. Effective Apr 20, 2006
- [AD 2004-08-15](https://openairdocs.org/ad/2004-08-15): TAWS8000 terrain awareness warning systems (TAWS) · Cessna 421, 500, 501 and 18 more. Effective Jun 7, 2004
- [AD 2001-23-17](https://openairdocs.org/ad/2001-23-17): GNS 430 units · Cessna 172, 182, 206 and 209 more. Effective Dec 28, 2001
- [AD 2001-22-14](https://openairdocs.org/ad/2001-22-14): Fire Extinguishing System Bottle Cartridges · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 105 more. Effective Dec 10, 2001
- [AD 93-05-15](https://openairdocs.org/ad/93-05-15): Thrust Reverser Throttle Load Limiter · Cessna 500, 501, 550 and 4 more. Effective Apr 23, 1993
- [AD 90-07-10 R1](https://openairdocs.org/ad/90-07-10-R1): Air Conditioning System · Cessna 550, 551 and S550 with STC SA2698SW. Effective May 29, 1990
- [AD 90-06-13](https://openairdocs.org/ad/90-06-13): Vertical Gyro · Bombardier DHC-8-101, DHC-8-102, DHC-8-103 and 14 more. Effective Mar 30, 1990
- [AD 88-13-03 R1](https://openairdocs.org/ad/88-13-03-R1): Cotter Pins - Main Landing Gear · Cessna S550. Effective Mar 15, 1989
- [AD 88-24-16](https://openairdocs.org/ad/88-24-16): Cabin Electrical Power · Cessna 650 and S550. Effective Dec 12, 1988
- [AD 88-11-07](https://openairdocs.org/ad/88-11-07): Flap Panels · Cessna 552 and S550. Effective Jul 21, 1988
- [AD 88-06-02](https://openairdocs.org/ad/88-06-02): Electrical Power · Cessna 550 and S550. Effective May 10, 1988
- [AD 85-24-04](https://openairdocs.org/ad/85-24-04): AFM Revised Placard - Icing · Cessna S550. Effective Feb 24, 1986
- [AD 85-25-10](https://openairdocs.org/ad/85-25-10): Placard - Icing Conditions · Cessna 552 and S550. Effective Feb 11, 1986

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

### Historical (superseded or no longer in force)

- [AD 2006-04-10](https://openairdocs.org/ad/2006-04-10) (historical): Identification sleeves · Cessna Aircraft Company, The 500, 550, 560 and 3 more. Effective Mar 24, 2006

## Information bulletins (advisory) (3 in force)

- [SAIB AIR-21-15R1](https://openairdocs.org/saib/AIR-21-15R1): Navigation System. Issued Sep 16, 2021
- [SAIB NM-14-08](https://openairdocs.org/saib/NM-14-08): Fuselage: Aerodynamic Fairings. Issued Jan 23, 2014
- [SAIB NM-10-13](https://openairdocs.org/saib/NM-10-13): Navigation: Flight Management System. Issued Jan 7, 2010
- [SAIB AIR-21-15](https://openairdocs.org/saib/AIR-21-15) (historical): Navigation System. Issued Aug 26, 2021

## NTSB investigations

None matched to N401HT.

## FAA accident and incident reports

None matched to N401HT.

## Service difficulty reports

None filed for this aircraft.

## Related

- Other Cessna S550 aircraft: https://openairdocs.org/model/cessna-s550/aircraft.md
- STCs for the Cessna S550: https://openairdocs.org/model/cessna-s550/stcs.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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