# N550MS: 2018 Textron 525B

- Status: Valid registration
- Airframe: [Textron 525B](https://openairdocs.org/model/textron-525b) (registry code 2076619, 8 seats)
- Engine: [Williams FJ44-3A](https://openairdocs.org/engine/williams-fj44-3a) (registry code 66006)
- Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI) (Textron Aviation Inc.), [TCDS E3GL](https://openairdocs.org/tcds/E3GL) (Williams International Company L.L.C.) (OpenAirDocs)
- Serial number: 525B0550
- Year built: 2018
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, commuter
- Airworthiness date: June 28, 2018
- Certificate issued: September 26, 2018
- Expires: September 30, 2028
- Mode S code: A7008F
- Registered owner: [Stevenson Leasing LLC](https://openairdocs.org/faa-owner/STEVENSON%20LEASING%20LLC)
- Location: [Kansas City, KS](https://openairdocs.org/faa-place/KS/Kansas%20City)
- Owner type: LLC
- Owner's area on the map: 39.0603° N, 94.6268° W: Placed by OpenAirDocs at the center of ZIP code 66103, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=550MS
- Page: https://openairdocs.org/aircraft/N550MS

From the FAA registry file of October 20, 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): 11 in force

### Matched by airframe (Textron 525B)

- [AD 2026-03-06](https://openairdocs.org/ad/2026-03-06): Vertical Stabilizer Structure, Nacelle/Pylon, Attach Fittings · Textron 525B. Effective Mar 13, 2026
- [AD 2024-15-09](https://openairdocs.org/ad/2024-15-09): Gust Lock/Damper System · Textron 525, 525A and 525B with STC SA03842NY. Effective Oct 22, 2024
- [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 2021-05-17](https://openairdocs.org/ad/2021-05-17): NAVIGATION SYSTEM · Rockwell Collins FDSA-6500, CL-600-2B16 (CL-604), 525B and 7 more. Effective Apr 29, 2021
- [AD 2020-24-06](https://openairdocs.org/ad/2020-24-06): Flight Controls · Textron 525, 525A and 525B with STC SA03842NY. Effective Dec 28, 2020
- [AD 2014-18-01](https://openairdocs.org/ad/2014-18-01): Navigation · Bombardier ATR42-200, ATR42-300, ATR42-320 and 23 more. Effective Oct 14, 2014
- [AD 2008-03-10](https://openairdocs.org/ad/2008-03-10): Lower wing skin structure · Cessna 525, 525A and 525B. Effective Mar 11, 2008
- [AD 2007-23-16](https://openairdocs.org/ad/2007-23-16): Electrical power relay circuit protection kit · Cessna 525B. Effective Dec 19, 2007
- [AD 2005-17-11](https://openairdocs.org/ad/2005-17-11): Fire extinguisher bottles · Cessna 525, 525A and 525B. Effective Oct 7, 2005
- [AD 98-25-02](https://openairdocs.org/ad/98-25-02): Top-mounted Antenna · Bell Helicopter Textron Canada 407, 172, 172A and 243 more. Effective Dec 22, 1998

### Matched by engine (Williams FJ44-3A)

- [AD 2022-13-15](https://openairdocs.org/ad/2022-13-15): Turbine Section · Williams International FJ44-2A, FJ44-2C, FJ44-3A and 1 more. Effective Aug 9, 2022

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

- [AD 2019-12-09](https://openairdocs.org/ad/2019-12-09) (historical): Navigation · Bombardier CL-600-2B16 (CL-604), Flight Display System Application FDSA-6500, 525B and 13 more. Effective Jul 23, 2019
- [AD 2019-08-13](https://openairdocs.org/ad/2019-08-13) (historical): Flight Controls · Textron 525, 525A and 525B with STC SA03842NY. Effective May 24, 2019

## Information bulletins (advisory) (1 in force)

- [SAIB CE-10-49R1](https://openairdocs.org/saib/CE-10-49R1): Equipment/Furnishings Drain Mast Heater. Issued Jan 5, 2011
- [SAIB CE-10-49](https://openairdocs.org/saib/CE-10-49) (historical): Equipment/Furnishings Drain Mast Heater. Issued Sep 23, 2010

## NTSB investigations

None matched to N550MS.

## NTSB investigations on N550MS not matched to an aircraft (1)

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

- [NTSB NYC66D0647](https://openairdocs.org/ntsb/NYC66D0647), Apr 21, 1966: Beechcraft B50 (N550MS), Newark, NJ, substantial damage

## FAA accident and incident reports

None matched to N550MS.

## Service difficulty reports

None filed for this aircraft.

## Related

- Other Textron 525B aircraft: https://openairdocs.org/model/textron-525b/aircraft.md
- STCs for the Textron 525B: https://openairdocs.org/model/textron-525b/stcs.md
- The Williams FJ44-3A engine: https://openairdocs.org/engine/williams-fj44-3a.md

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