# N705SP: 1985 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: S550-0048
- Year built: 1985
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: June 6, 1985
- Certificate issued: January 3, 2025
- Expires: January 31, 2032
- Mode S code: A968BF
- Registered owner: [Sealandsky LLC](https://openairdocs.org/faa-owner/SEALANDSKY%20LLC)
- Location: [Santa Fe, NM](https://openairdocs.org/faa-place/NM/Santa%20Fe)
- Owner type: LLC
- Owner's area on the map: 35.7082° N, 105.8510° W: Placed by OpenAirDocs at the center of ZIP code 87501, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=705SP
- Page: https://openairdocs.org/aircraft/N705SP

From the FAA registry file of October 22, 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 N705SP.

## 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 20000917024459I](https://openairdocs.org/incident/20000917024459I), Sep 17, 2000: Cessna S550 (N705SP), Batavia, OH, Minor damage. (-23)During landing at Clermont County Airport, Batavia, Ohio, citation 550, N705SP, struck two deer causing minor damage to the aircraft.

## 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.

## STCs that may be installed (OpenAirDocs) (203, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Cessna S550)

- [STC ST01305WI-D](https://openairdocs.org/stc/ST01305WI-D): Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation in accordance with Collins Drawing Index as listed on AML No. ST01305WI-D, Revision -, or later FAA approved revision. Rockwell Collins Inc
- [STC ST12461IB](https://openairdocs.org/stc/ST12461IB): Installation of Cockpit Voice Recorder with optional RIPS Upgrade. Mid- Canada Mod Center
- [STC ST01823WI](https://openairdocs.org/stc/ST01823WI): Installation of Garmin GTS Traffic Sensor with Garmin GTX 3000 Mode S Transponders with ADS-B Out. Blackhawk Aerospace Technologies Inc
- [STC ST04201NY](https://openairdocs.org/stc/ST04201NY): Installation of ENode Engine Data Acquisition Unit & IONode Digital Data Recorder. TBO Extension, LLC
- [STC ST00197IB](https://openairdocs.org/stc/ST00197IB): Installation of the Universal Quick Access Recorder (uQAR). Flight Data Technologies Inc
- [STC ST12344IB](https://openairdocs.org/stc/ST12344IB): Replacement of the Halon Type 1211 portable fire extinguisher with Halotron BrX portable fire extinguisher with Halotron BrX portable fire extinguisher. Cessna Duesseldorf Citation Service Center GmbH
- [STC SA2622NM](https://openairdocs.org/stc/SA2622NM): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101). Precise Flight Inc
- [STC ST02016WI](https://openairdocs.org/stc/ST02016WI): Installation of the Meggitt Wireless Tire Pressure Sensor. 3S Certification LLC
- [STC ST11216DS](https://openairdocs.org/stc/ST11216DS): Installation of automatic dependent surveillance-broadcast (ADS-B) out on Part 25 aircraft. BHE & Associates Ltd
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC ST02718LA](https://openairdocs.org/stc/ST02718LA): Modification to replace the existing standby instrument. Acron Aviation Inc
- [STC ST03292CH](https://openairdocs.org/stc/ST03292CH): Activation of an 802.11 a/b/g/n WiFi System. Elliott Aviation Technical Products Development, Inc
- [STC ST09854AC](https://openairdocs.org/stc/ST09854AC): Installation of a Lumin Media Server. L2 Aviation
- [STC ST155CH](https://openairdocs.org/stc/ST155CH): Installation of BF Goodrich Avionics systems TCAS791 traffic alert and collison avoidance system I (TCASI). Acron Aviation Inc
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII. Aircraft Systems and Manufacturing Inc
- [STC ST04736NY](https://openairdocs.org/stc/ST04736NY): True Blue TS28 Emergency Battery Power Supply Replacement. Aerospace Design and Compliance LLC
- [STC ST01936WI](https://openairdocs.org/stc/ST01936WI): Installation of LED lights. AeroLED's Holdings LLC
- [STC ST02427LA](https://openairdocs.org/stc/ST02427LA): Installation of Dual Garmin GTN 6XX/7XX Series Global Navigation System with Structural Antenna and WAAS approval; Garmin GMA 35 Audio Panel; and Dual Garmin GTX 33 Mode S Transponders, Weather Radar, and ADS-B Link. JETTECH LLC
- [STC ST03424CH](https://openairdocs.org/stc/ST03424CH): Certification of Automatic Dependent Surveillance - Broadcast (ADS-B) Out System with Rockwell Collins TDR-94/-94D Transponders. CMD Flight Solutions LLC
- [STC ST04575AT](https://openairdocs.org/stc/ST04575AT): Installation of the Rockwell Collins ALT-1000+/ -4000+ with 5G Filtering. Chippewa Aerospace Inc
- [STC ST02029WI](https://openairdocs.org/stc/ST02029WI): Installation of Garmin GI 275 Standby Instrument and GSB 15 USB Port. Blackhawk Aerospace Technologies
- [STC SA1773SO](https://openairdocs.org/stc/SA1773SO): Installation of a third stand-by attitude gyro and dedicated power supply AIM P/N PE 24-1RM. Summit Aviation Inc
- [STC ST02444AT-D](https://openairdocs.org/stc/ST02444AT-D): Installation of a Honeywell Mark VIII EGPWS System. Summit Aviation Inc
- [STC ST01070DE](https://openairdocs.org/stc/ST01070DE): Installation of the Curtiss-Wright Fortress Flight Data Recorder (with Cockpit Voice Recorder). Peregrine
- [STC ST00098IB](https://openairdocs.org/stc/ST00098IB): Introduction of ADS-B Out. STC Twenty One Limited
- [STC ST02004WI](https://openairdocs.org/stc/ST02004WI): Installation of the Garmin GI-275 Instantaneous Vertical Speed Indicators (IVSI). Peregrine
- [STC ST00011WI](https://openairdocs.org/stc/ST00011WI): Installation of Concorde RG380E/40 and 40B battery. Aero-Mach Wilco LLC
- [STC SA1441GL](https://openairdocs.org/stc/SA1441GL): Installation of Cleveland Main Wheels and Brakes. Kaman Corporation Aircraft Wheel and Brake LLC
- [STC SA882GL](https://openairdocs.org/stc/SA882GL): Install aircraft wheel and brake conversion kit 199-137. Kaman Corporation Aircraft Wheel and Brake LLC
- [STC ST04281AT](https://openairdocs.org/stc/ST04281AT): Installation for the Upgrade of the NZ-2000 FMS computer for software version NZ6. Chippewa Aerospace Inc
- [STC ST01930LA](https://openairdocs.org/stc/ST01930LA): Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI). Sandel Avionics LLC
- [STC ST00617WI](https://openairdocs.org/stc/ST00617WI): Installation of Bendix/King EFS-50 Two-Tube (EFIS) Electronic Flight Instrumentation System. For 550 (S/N 0002 thru 0733). Blackhawk Aerospace Technologies Inc
- [STC ST00624WI](https://openairdocs.org/stc/ST00624WI): Installation of Bendix/King EFS-50 Five-Tube (EFIS) Electronic Flight Instrumentation System. FOr 550 (S/N 0002 thru 0733). Blackhawk Aerospace Technologies Inc
- [STC ST01149WI](https://openairdocs.org/stc/ST01149WI): Installation of IS&S Air Data System with Reduced Vertical Separation Minimum (RVSM) compliant Dual Air Data System. Blackhawk Aerospace Technologies Inc
- [STC ST01197WI](https://openairdocs.org/stc/ST01197WI): Installation of Universal Avionics EFI-550 2-Display EFIS System. Data required: (1) Columbia Avionics, Inc. Master Document List No. 30141165, Revision 3, dated September 24, 2003; and (2) FAA Approved Flight Manual Supplement 30141180, dated September 30, 2003, or later FAA Approved Revisions to (1) or (2). Blackhawk Aerospace Technologies Inc
- [STC ST01252WI](https://openairdocs.org/stc/ST01252WI): Reduced Vertical Separation Minimum (RVSM) group airworthiness approval of Cessna Model S550 and 560 Citation Aircraft in accordance with Columbia Avionics, Inc. Master Document List RVSM Group Approval Cessna S550/560, Document No. 30141243, Rev. 3, dated June 4, 2004, or later FAA approved revision. Blackhawk Aerospace Technologies Inc
- [STC ST01466WI](https://openairdocs.org/stc/ST01466WI): Installation of Universal Avionics EFI-890R Flat Panel EFIS System. Blackhawk Aerospace Technologies Inc
- [STC ST01691WI](https://openairdocs.org/stc/ST01691WI): Installation of Garmin GTN Series GPS/Comm/Nav Systems with optional Garmin GDL-69/A XM Weather Data Link, GTX-33 Series Transponders and optional Bendix/King KMR-675 Marker Beacon Receiver. Blackhawk Aerospace Technologies Inc
- [STC ST01929WI](https://openairdocs.org/stc/ST01929WI): Installation of Garmin G700 TXi EFIS system and GWX 75 Weather Radar. Blackhawk Aerospace Technologies Inc
- [STC ST04177AT](https://openairdocs.org/stc/ST04177AT): Installation of a Talon Aerospace LED Replacement General Purpose Lamps. Aaxico Technical Services Inc
- [STC ST02642AT](https://openairdocs.org/stc/ST02642AT): Installation of a RVSM Air Data System. Carlisle Interconnect Technologies Inc
- [STC SA4511NM](https://openairdocs.org/stc/SA4511NM): Installation of Dual Honeywell Primus II Communication and Navigation System. Honeywell International Inc
- [STC ST02635LA](https://openairdocs.org/stc/ST02635LA): Modification to replace the existing Mode S Transponder system with the ACSS NXT-600 Mode S Transponder with ADS-B Out. Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC SA01452CH](https://openairdocs.org/stc/SA01452CH): Installation of an air ambulance conversion kit. Med-Pac Inc
- [STC ST01027DE](https://openairdocs.org/stc/ST01027DE): Installation of MarathonNorco Aerospace Inc Nickel Cadmium battery in place of existing Nickel Cadmium main aircraft battery/batteries. MarathonNorco Aerospace Inc
- [STC SA2698SW](https://openairdocs.org/stc/SA2698SW): Installation of freon air conditioning system. Air Comm Corporation
- [STC SA2916SW](https://openairdocs.org/stc/SA2916SW): Installation of alternate gear horn switch. Air Comm Corporation
- [STC ST04016NY](https://openairdocs.org/stc/ST04016NY): Installation of Cabin Entry Step Assembly. Skyway Group Inc
- [STC ST00154SE](https://openairdocs.org/stc/ST00154SE): Installation of emergency medical stretcher, oxygen, and electrical systems. LifePort LLC
- [STC ST04340NY](https://openairdocs.org/stc/ST04340NY): Installation of TCAS 7.1 (ACAS II) upgrade of Prior Existing TCAS 7.0. Scandinavian Avionics Design ApS

All 203: https://openairdocs.org/aircraft/N705SP/stcs.md

## Related

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

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