# Beech C18S

- Type: Aircraft model (FAA registry)
- Registry code: 1150902
- Manufacturer (registry): BEECH
- Model: C18S
- Aircraft type: Fixed wing multi engine
- Category: Airplane
- Engines: 2 · Reciprocating
- Seats: 10
- Weight class: Up to 12,499 lb
- Cruise speed: 165 mph
- Certification: Type certificated
- Data sheet: [TCDS A-757](https://openairdocs.org/tcds/A-757) (OpenAirDocs)
- Holder: Textron Aviation Inc.
- Registered aircraft: 13
- Page: https://openairdocs.org/model/beech-c18s

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [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 75-27-09 R2](https://openairdocs.org/ad/75-27-09-R2): Wing Structure · Textron 18A, 18D, 18S (Army C-45C) and 27 more. Effective Aug 21, 1980
- [AD 77-19-07](https://openairdocs.org/ad/77-19-07): Control Column Assembly · Textron 18A, 18D, 18S (Army C-45C) and 27 more. Effective Sep 29, 1977
- [AD 65-03-01](https://openairdocs.org/ad/65-03-01): Gap Seal Strips · Recertification under subparts B &G of CAR 3 and installation… (Staggerwing Museum Foundation STC SA2-1016 or 7 others)
- [AD 53-26-01](https://openairdocs.org/ad/53-26-01): Ignition Switch · Briggs & Stratton Ignition Switches, Army AT-11, C18S and 3 more
- [AD 49-15-03](https://openairdocs.org/ad/49-15-03): Fuel Tank Vent System · Textron Army AT-11 and C18S
- [AD 48-51-01](https://openairdocs.org/ad/48-51-01): Control Wheel Shaft Inspection · Textron Army AT-11, C18S and D17S
- [AD 48-34-01](https://openairdocs.org/ad/48-34-01): Stabilizer Attachment Fittings · Textron Army AT-11, C18S, D18C and 2 more
- [AD 48-14-03](https://openairdocs.org/ad/48-14-03): Wing Center Section Spar · Textron Army AT-11 and C18S
- [AD 47-33-05](https://openairdocs.org/ad/47-33-05): Horizontal Stabilizer Spar · Textron Army AT-11, C18S and D18S
- [AD 47-33-04](https://openairdocs.org/ad/47-33-04): Fuel Leakage · Textron C18S
- [AD 47-33-03](https://openairdocs.org/ad/47-33-03): Tail Cone Drain Holes · Textron Army AT-11 and C18S
- [AD 47-06-09](https://openairdocs.org/ad/47-06-09): Landing Gear Retracting Mechanism · Textron Army AT-11 and C18S
- [AD 47-06-08](https://openairdocs.org/ad/47-06-08): Starter Solenoid and Buss Lead Wires · Textron Army AT-11 and C18S

## Registered aircraft (13)

- [N1047B](https://openairdocs.org/aircraft/N1047B): [Alaska Aviation Museum](https://openairdocs.org/faa-owner/ALASKA%20AVIATION%20MUSEUM), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), S/N 7728
- [N218HC](https://openairdocs.org/aircraft/N218HC): [Invader Leasing LLC](https://openairdocs.org/faa-owner/INVADER%20LEASING%20LLC), [Kingsford, MI](https://openairdocs.org/faa-place/MI/Kingsford), S/N 8281
- [N23DF](https://openairdocs.org/aircraft/N23DF): [Simmons Aviation Services LLC](https://openairdocs.org/faa-owner/SIMMONS%20AVIATION%20SERVICES%20LLC), [Pawcatuck, CT](https://openairdocs.org/faa-place/CT/Pawcatuck), built 1944, S/N 6220
- [N44573](https://openairdocs.org/aircraft/N44573): [Adventure North Flying Service LLC](https://openairdocs.org/faa-owner/ADVENTURE%20NORTH%20FLYING%20SERVICE%20LLC), [Baudette, MN](https://openairdocs.org/faa-place/MN/Baudette), built 1944, S/N 7678
- [N4910N](https://openairdocs.org/aircraft/N4910N): [Jackson James E](https://openairdocs.org/faa-owner/JACKSON%20JAMES%20E), [Brainerd, MN](https://openairdocs.org/faa-place/MN/Brainerd), S/N 8382
- [N5552A](https://openairdocs.org/aircraft/N5552A): [Allen Chorman & Son Inc](https://openairdocs.org/faa-owner/ALLEN%20CHORMAN%20%26%20SON%20INC), [Milton, DE](https://openairdocs.org/faa-place/DE/Milton), built 1944, S/N 8431
- [N6047V](https://openairdocs.org/aircraft/N6047V): [Wiplinger Robert D](https://openairdocs.org/faa-owner/WIPLINGER%20ROBERT%20D), [Inver Grove Hgts, MN](https://openairdocs.org/faa-place/MN/Inver%20Grove%20Hgts), built 1944, S/N 8151
- [N64463](https://openairdocs.org/aircraft/N64463): [Air Combat Museum](https://openairdocs.org/faa-owner/AIR%20COMBAT%20MUSEUM), [Springfield, IL](https://openairdocs.org/faa-place/IL/Springfield), built 1943, S/N 4534
- [N67929](https://openairdocs.org/aircraft/N67929): [Ladd Daniel T](https://openairdocs.org/faa-owner/LADD%20DANIEL%20T), [Loudon, NH](https://openairdocs.org/faa-place/NH/Loudon), built 1945, S/N 6430
- [N69044](https://openairdocs.org/aircraft/N69044): [Cross Brian K](https://openairdocs.org/faa-owner/CROSS%20BRIAN%20K), [Winters, CA](https://openairdocs.org/faa-place/CA/Winters), built 1943, S/N 4781
- [N79MB](https://openairdocs.org/aircraft/N79MB): [Somers Charles M](https://openairdocs.org/faa-owner/SOMERS%20CHARLES%20M), [Hillsboro, OR](https://openairdocs.org/faa-place/OR/Hillsboro), built 1942, S/N 4185
- [N81GB](https://openairdocs.org/aircraft/N81GB): [Carolina Aero Tech LLC](https://openairdocs.org/faa-owner/CAROLINA%20AERO%20TECH%20LLC), [Hilton Head Island, SC](https://openairdocs.org/faa-place/SC/Hilton%20Head%20Island), built 1944, S/N 7881
- [N9109R](https://openairdocs.org/aircraft/N9109R): [Bobby Younkin Airshows & Sales Inc](https://openairdocs.org/faa-owner/BOBBY%20YOUNKIN%20AIRSHOWS%20%26%20SALES%20INC), [Siloam Springs, AR](https://openairdocs.org/faa-place/AR/Siloam%20Springs), S/N 4383

## NTSB investigations (77, newest 50)

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 FTW99FA148](https://openairdocs.org/ntsb/FTW99FA148), May 24, 1999: Beech C18S (N9729H), Waldron, AR, destroyed, 1 fatal. Probable cause: the separation of a propeller blade in cruise flight as a result of fatigue cracking emanating from surface corrosion pitting.
- [NTSB CHI93FA180](https://openairdocs.org/ntsb/CHI93FA180), May 22, 1993: Beech C-18S (N67E), North Branch, MN, destroyed, 1 fatal. Probable cause: excessive use of brakes by the pilot-in-command.
- [NTSB MIA86LA046](https://openairdocs.org/ntsb/MIA86LA046), Dec 19, 1985: Beech C-18S (N64463), Deland, FL, substantial damage
- [NTSB SEA82DA116](https://openairdocs.org/ntsb/SEA82DA116), Jul 18, 1982: Beech C45G (N4758N), Sheridan, OR, destroyed
- [NTSB FTW82DA117](https://openairdocs.org/ntsb/FTW82DA117), Apr 9, 1982: Beech C-18S (N64463), Hereford, TX, substantial damage
- [NTSB ATL81DKJ01](https://openairdocs.org/ntsb/ATL81DKJ01), Oct 5, 1980: Beech C18S (N6806C), Theodore, AL, substantial damage
- [NTSB ATL80FA066](https://openairdocs.org/ntsb/ATL80FA066), Jul 4, 1980: Beech C18S (N35MS), Wassaw Is, GA, destroyed, 2 fatal
- [NTSB ANC79IA069](https://openairdocs.org/ntsb/ANC79IA069), Jul 13, 1979: Beech C-18S (N1047B), Drake Island, AK, incident, minor damage
- [NTSB FTW79FQG02](https://openairdocs.org/ntsb/FTW79FQG02), Oct 10, 1978: Beech C18S (N36MS), Amarillo, TX, substantial damage
- [NTSB SEA77DYM57](https://openairdocs.org/ntsb/SEA77DYM57), Aug 14, 1977: Beech C-18S (N4758N), Sheridan, OR, substantial damage
- [NTSB MIA77FKJ56](https://openairdocs.org/ntsb/MIA77FKJ56), Jul 4, 1977: Beech C18S (N711SM), Irvington, AL, substantial damage
- [NTSB IAD75FIG01](https://openairdocs.org/ntsb/IAD75FIG01), Jul 2, 1974: Beech C18S (N334G), Ridgely, MD, substantial damage
- [NTSB MKC74AK053](https://openairdocs.org/ntsb/MKC74AK053), Mar 1, 1974: Beech G18S (N123A), Fort Scott, KS, destroyed
- [NTSB NYC74DNA09](https://openairdocs.org/ntsb/NYC74DNA09), Jul 30, 1973: Beech C18S (N44565), W.Falmouth, MA, destroyed
- [NTSB FTW73FRA24](https://openairdocs.org/ntsb/FTW73FRA24), Apr 28, 1973: Beech C18S (N6417C), Cleveland, TX, substantial damage
- [NTSB CHI73AC074](https://openairdocs.org/ntsb/CHI73AC074), Mar 16, 1973: Beech C18S (N1171X), Kewanee, IL, substantial damage
- [NTSB SEA72DYA30](https://openairdocs.org/ntsb/SEA72DYA30), Apr 20, 1972: Beech C-18S (N4289A), Blackfoot, ID, substantial damage
- [NTSB DEN72AD045](https://openairdocs.org/ntsb/DEN72AD045), Apr 2, 1972: Beech C-18S (N1322M), Mcfadden, WY, destroyed, 7 fatal
- [NTSB FTW72DRG57](https://openairdocs.org/ntsb/FTW72DRG57), Feb 1, 1972: Beech C-18S (N7939C), Santa Rosalin, Mexico, substantial damage
- [NTSB LAX71DUJ81](https://openairdocs.org/ntsb/LAX71DUJ81), Jan 31, 1971: Beech 18 (N8050H), Tucson, AZ, substantial damage
- [NTSB MIA71FKG05](https://openairdocs.org/ntsb/MIA71FKG05), Jul 11, 1970: Beech C18S (N6795C), Savannah, GA, substantial damage
- [NTSB CHI71FDJ03](https://openairdocs.org/ntsb/CHI71FDJ03), Jul 10, 1970: Beech C-18 (N2391C), Waukesha, WI, substantial damage
- [NTSB MIA70DKT15](https://openairdocs.org/ntsb/MIA70DKT15), Mar 31, 1970: Beech C18S (N21925), Sandy Pt, Burkina Faso, substantial damage
- [NTSB FTW70F0268](https://openairdocs.org/ntsb/FTW70F0268), Oct 18, 1969: Beech C-18S (N11193), Dickinson, TX, substantial damage
- [NTSB MIA70D0141](https://openairdocs.org/ntsb/MIA70D0141), Sep 4, 1969: Beech C-18S (N6806C), Naples, FL, substantial damage
- [NTSB LAX70F0028](https://openairdocs.org/ntsb/LAX70F0028), Jul 1, 1969: Beech C-18S (N7329C), Rialto, CA, substantial damage
- [NTSB MIA69D0070](https://openairdocs.org/ntsb/MIA69D0070), Jul 10, 1968: Beech C-18S (N6777C), Naples, FL, substantial damage
- [NTSB MIA68D0497](https://openairdocs.org/ntsb/MIA68D0497), Apr 12, 1968: Beech D18S (N6787C), Andros Is, Burkina Faso, substantial damage
- [NTSB MIA68A0059](https://openairdocs.org/ntsb/MIA68A0059), Dec 28, 1967: Beech C18 (N7940C), St.Croix, VI, substantial damage
- [NTSB FTW68A0046](https://openairdocs.org/ntsb/FTW68A0046-201106), Oct 21, 1967: Beech C-18S (N6795C), Brownsville, TX, destroyed, 1 fatal
- [NTSB MKC68A0005](https://openairdocs.org/ntsb/MKC68A0005), Jul 15, 1967: Beech C-18S (N61388), Grand Forks, ND, substantial damage
- [NTSB LAX68F0028](https://openairdocs.org/ntsb/LAX68F0028), Jun 27, 1967: Beech C18S (N67929), Van Nuys, CA, substantial damage
- [NTSB CHI68F0090](https://openairdocs.org/ntsb/CHI68F0090), Jun 26, 1967: Beech C-18S (N1065), Niles, MI, substantial damage
- [NTSB MIA67F0566](https://openairdocs.org/ntsb/MIA67F0566), May 9, 1967: Beech C-18S (N21925), Ft Lauderdale, FL, substantial damage
- [NTSB MKC67D0494](https://openairdocs.org/ntsb/MKC67D0494), Feb 25, 1967: Beech C-18S (N58911), Rosemount, MN, substantial damage
- [NTSB LAX67F0297](https://openairdocs.org/ntsb/LAX67F0297), Jan 16, 1967: Beech C-18S (N8042H), Van Nuys, CA, substantial damage
- [NTSB MIA67D0371](https://openairdocs.org/ntsb/MIA67D0371), Nov 24, 1966: Beech C-18S (N6402C), Tortola Br., U.S. Virgin Islands, destroyed
- [NTSB ANC67A0024](https://openairdocs.org/ntsb/ANC67A0024), Aug 23, 1966: Beech C-18S (N4711V), Annette, AK, substantial damage
- [NTSB ANC67A0016](https://openairdocs.org/ntsb/ANC67A0016), Aug 15, 1966: Beech C-18S (N445), Anchorage, AK, destroyed, 4 fatal
- [NTSB OAK67A0017](https://openairdocs.org/ntsb/OAK67A0017), Aug 4, 1966: Beech C-18S (N7385C), San Jose, CA, destroyed
- [NTSB NYC67F0133](https://openairdocs.org/ntsb/NYC67F0133), Jul 23, 1966: Beech C-18S (N8043H), E.Moriches, NY, substantial damage
- [NTSB CHI67F0006](https://openairdocs.org/ntsb/CHI67F0006), May 31, 1966: Beech C18 (N286M), Lima, OH, substantial damage
- [NTSB CHI66A0081](https://openairdocs.org/ntsb/CHI66A0081), Mar 31, 1966: Beech C-18S (N80216), Akron, OH, substantial damage
- [NTSB MIA66D0497](https://openairdocs.org/ntsb/MIA66D0497), Feb 25, 1966: Beech D-18S (N6787C), St Maarten Na, NT, substantial damage
- [NTSB OAK66D0186](https://openairdocs.org/ntsb/OAK66D0186), Jan 9, 1966: Beechcraft C18S (N7329C), King City, CA, substantial damage
- [NTSB MIA66A0031](https://openairdocs.org/ntsb/MIA66A0031), Sep 15, 1965: Beech C-18S (N8063H), St.Thomas, VI, destroyed, 3 fatal
- [NTSB CHI66F0308](https://openairdocs.org/ntsb/CHI66F0308), Sep 8, 1965: Beechcraft C-18S (N4723C), Jamestown, IN, substantial damage
- [NTSB UNK65X1530](https://openairdocs.org/ntsb/UNK65X1530), Aug 28, 1965: Beech D18S (N4422N), Bahia, Ecuador, substantial damage
- [NTSB UNK65X1529](https://openairdocs.org/ntsb/UNK65X1529), Aug 28, 1965: Beechcraft C-18S (N4422N), Guayaquil, Ecuador, substantial damage
- [NTSB MKC66F0293](https://openairdocs.org/ntsb/MKC66F0293), Aug 26, 1965: Beechcraft C-18S (N59550), Interntl Fls, MN, substantial damage

All 77: https://openairdocs.org/model/beech-c18s/ntsb.md

## FAA accident and incident reports (22)

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 20210429007589I](https://openairdocs.org/incident/20210429007589I), Apr 29, 2021: Beech C18S (N9109R), St Joseph, MO, Minor damage. After selecting gear down for landing at kstj, the left landing gear did not fully extend to the down and locked position. The pilot attempted manual extension…
- [Incident 20160712020239I](https://openairdocs.org/incident/20160712020239I), Jul 12, 2016: Beech C18S (N7381C), Fayettville, GA, Minor damage. Upon the 4th full stop landing at this airport, the RH main lg strut collapsed, which caused the RH prop to strike the ground. The pilot attempted to stop and…
- [Accident 19990523045659A](https://openairdocs.org/incident/19990523045659A), May 23, 1999: Beech C18S (N9729H), Waldron, AR, No damage. (-23)The pilot reported to ATC that he lost an engine enroute to springdale, Arkansas, at 5,500 feet. He requested vectors to the nearest airport; Waldron,…
- [Incident 19981107041509I](https://openairdocs.org/incident/19981107041509I), Nov 7, 1998: Beech C18S (N9729H), Biloxi, MS, Minor damage. (-23) Aircraft returning to ramp after doing an airshow taxied into a car striking the right rear fender with the left propeller.
- [Accident 19930522014689A](https://openairdocs.org/incident/19930522014689A), May 22, 1993: Beech C18S (N67E), North Branch, MN, Destroyed, 1 fatal. After two low passes for a mall dedication made crosswind landing at private strip. Nosed over. Burned. Skid marks.
- [Incident 19910526024729I](https://openairdocs.org/incident/19910526024729I), May 26, 1991: Beech C18S (N64463), Albuquerque, NM, Minor damage. Unable to extend landing gear. Made a gear up landing.
- [Accident 19851219077749A](https://openairdocs.org/incident/19851219077749A), Dec 19, 1985: Beech C18S (N64463), Deland, FL, Substantial damage. The inexperienced right seat pilot inadvertently retracted the gear on landing. PIC failed to supervise other pilot
- [Accident 19820717050529A](https://openairdocs.org/incident/19820717050529A), Jul 17, 1982: Beech C45G (N4758N), Sheridan, OR, Destroyed. Left brake L0CKED on touchdown. Airplane nosed up and burned. Brake disc rusty and corroded.
- [Accident 19820408008739A](https://openairdocs.org/incident/19820408008739A), Apr 8, 1982: Beech C18S (N64463), Hereford, TX, Substantial damage. Total electrical failure during flight. Pilot lowered gear manually, but gear collapsed during taxi after landing.
- [Incident 19810920080079I](https://openairdocs.org/incident/19810920080079I), Sep 20, 1981: Beech C18S (N64463), Eveleth, MN, 1 fatal. Skydiver failed to pull ripcords on either main or reserve chutes. Autopsy indicates diver unable to open chutes.
- [Accident 19801005082929A](https://openairdocs.org/incident/19801005082929A), Oct 5, 1980: Beech C18S (N6806C), Theodore, AL, Substantial damage. Both engines quit on final. Landed short of runway. Fuel selector on empty tank. Other tank contained fuel.
- [Accident 19800704078119A](https://openairdocs.org/incident/19800704078119A), Jul 4, 1980: Beech 18S (N35MS), Wausaw Island, GA, Destroyed. Descended into trees in wings level slow descent. Possible pilot incapacitation from toxic spray chemical.
- [Incident 19790311011139I](https://openairdocs.org/incident/19790311011139I), Mar 11, 1979: Beech 18/ (N36MS), Amarillo, TX. On take off, oil hose which connects the engine return oil to firewall fitting ruptured. Pilot landed in a field
- [Incident 19790226007739I](https://openairdocs.org/incident/19790226007739I), Feb 26, 1979: Beech C18S (N47GC), Covington, LA. Main pilot chute, reserve canopy and reserve ripcord entangled.
- [Accident 19781010039039A](https://openairdocs.org/incident/19781010039039A), Oct 10, 1978: Beech SNB2C (N36MS), Amarillo, TX, Substantial damage. Pilot mechanic found tinfoil from gum wrapper across landing geartch terminals.
- [Accident 19770814028209A](https://openairdocs.org/incident/19770814028209A), Aug 14, 1977: Beech TC45G (N4758N), Sheridan, OR, Substantial damage
- [Accident 19770704016879A](https://openairdocs.org/incident/19770704016879A), Jul 4, 1977: Beech C18S (N711SM), Irvington, AL, Substantial damage. Parachute jumper struck horizontal stabilizer.
- [Accident 19740702020979A](https://openairdocs.org/incident/19740702020979A), Jul 2, 1974: Beech C18S (N334G), Ridgely, MD, Substantial damage. Practice eng-out apch.t/d 1500FT short. Bounced,veered l toward feathrd eng,into swamp.
- [Accident 19740301013849A](https://openairdocs.org/incident/19740301013849A), Mar 1, 1974: Beech G18S (N123A), Fort Scott, KS, Destroyed. Dark night. Plt rprtd lo fuel PR,#2 eng failed,feathered. Hi CHT,pwr loss #1 eng. Post-impact fire.
- [Accident 19730730023259A](https://openairdocs.org/incident/19730730023259A), Jul 30, 1973: Beech TC45G (N44565), W.Falmouth, MA, Destroyed. Pilot exhausted fuel from right tank unable to restart on left tank aircraft sank after ditching.
- [Accident 19730428009179A](https://openairdocs.org/incident/19730428009179A), Apr 28, 1973: Beech C18S (N6417C), Cleveland, TX, Substantial damage. Plt had to maneuver to avoid pwr lines on final apch.
- [Accident 19730316006349A](https://openairdocs.org/incident/19730316006349A), Mar 16, 1973: Beech TC45G (N1171X), Kewanee, IL, Substantial damage. Right gr hit mud. Left gr collapsed.

## Service difficulty reports (1)

As reported by operators and repair stations, by the model named in the report.

- [SDR CA050427011](https://openairdocs.org/sdr/CA050427011), Apr 16, 2005: RIVET. LOOSE. (CAN) AT 100 HOUR INSPECTION, MOVEMENT (LINEAR) WAS NOTED ON ACTUATING LINK BUT NO MOVEMENT AT ATTACH POINTS. FURTHER INVESTIGATIION REVEALED UNDER SPRING LOOSE

## STCs that may be installed (OpenAirDocs) (143, first 50)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC
- [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC
- [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC
- [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc
- [STC SA7965SW](https://openairdocs.org/stc/SA7965SW): Application of fabric and polyurethane finishing system. Shady Aviation LLC
- [STC SA01240SE](https://openairdocs.org/stc/SA01240SE): Installation of secondary voltage indication system. Visual Instruments LLC
- [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc
- [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc
- [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc
- [STC SA00344BO PAGE 1](https://openairdocs.org/stc/SA00344BO%20PAGE%201): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SA6070NM](https://openairdocs.org/stc/SA6070NM): Installation of a 'quick-disconnect drain plug' on the engine rocker sump for the oil drain retrieval system after engine shutdown. West Coast Air Creations
- [STC SA01282NY](https://openairdocs.org/stc/SA01282NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830. Airwolf Filter Corporation
- [STC SA02212AK](https://openairdocs.org/stc/SA02212AK): Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems. Seaplanes North LLC
- [STC SA02428SE](https://openairdocs.org/stc/SA02428SE): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft. Henry F Rogers/David E Polley
- [STC SA02930NY](https://openairdocs.org/stc/SA02930NY): Installation of Insight Instrument Corporation Graphic Engine Monitor (GEM 610C) models G3, G2, and G1 and 1200C model G4 as primary Cylinder Head Temperature (CHT), Exhaust Gas Temperature (EGT), and Turbine Inlet Temperature (TIT) Instruments. Insight Instrument Corporation
- [STC SA02283SE PAGE 2](https://openairdocs.org/stc/SA02283SE%20PAGE%202): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P. Electronics International Inc
- [STC SA02402SE PAGE 1](https://openairdocs.org/stc/SA02402SE%20PAGE%201): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) CGR-30C. Electronics International Inc
- [STC SA3-86](https://openairdocs.org/stc/SA3-86): RCA AVQ-50 radar antenna mount installation. Sabreliner Aviation LLC
- [STC SA02825NY PAGE 1](https://openairdocs.org/stc/SA02825NY%20PAGE%201): Installation of Aerospace Logic Aircraft Instruments. Aerospace Logic Inc
- [STC SA1315WE](https://openairdocs.org/stc/SA1315WE): Installation of Mixture Monitor (exhaust gas temperature probe, gage and selector) in accordance with Delta Products Part Lists A-192 and A-193, or in accordance with Tri-Star Corporation Mixture Monitor Installation Instructions dated December 9, 1981, or later FAA approved revision and/or Drawing List MM-127 dated November 15, 1981, or later FAA approved revision in aircraft models listed in Master Eligibility List P-80-A-6 revised March 29, 1968, copy attached, or later FAA approved revision. Universal Corporation
- [STC SA02110CH](https://openairdocs.org/stc/SA02110CH): Installation of a Time Trac Data Recorder. P2 Incorporated
- [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc
- [STC SA174AL](https://openairdocs.org/stc/SA174AL): Installation of Stewart-Warner Model 940-F24 heater. Aircraft Innovations, LLC
- [STC SA2-433](https://openairdocs.org/stc/SA2-433): Installation of a carburetor air induction system. BlackHawk Aircraft Maintenance Inc
- [STC SA01988SE](https://openairdocs.org/stc/SA01988SE): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P. Electronics International Inc
- [STC SA4-32](https://openairdocs.org/stc/SA4-32): Internal combustion heaters. Staggerwing Museum Foundation Inc
- [STC SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. M-20 Oil Separators LLC
- [STC SA1708WE](https://openairdocs.org/stc/SA1708WE): Removal of cargo door (approved under STC SA995WE) to permit aircraft to engage in special operations such as aerial photography, parachute jumping, etc. SOUTHWESTERN AERO EXCHANGE INC
- [STC SA1512WE](https://openairdocs.org/stc/SA1512WE): Installation of exhaust gas temperature monitoring systems Model EGT-1. K S Avionics Inc
- [STC SA2557NM](https://openairdocs.org/stc/SA2557NM): Installation of KS Avionics EGT/CHT-2( ) combined exhaust gas and cylinder head temperature monitoring system. K S Avionics Inc. Lists C18 Series
- [STC SA138SO](https://openairdocs.org/stc/SA138SO): D18S landing gear 404-188400 on C18S. Staggerwing Museum Foundation Inc
- [STC SA2-1016](https://openairdocs.org/stc/SA2-1016): Recertification under subparts B &G of CAR 3 and installation of SA4-120 airspeed system, SA4-21, fuel system, and SA-2-523, stabilizer angle of incidence change and elevator seal strips. Staggerwing Museum Foundation Inc
- [STC SA2-1230](https://openairdocs.org/stc/SA2-1230): Installation of extended tail wheel assembly. Staggerwing Museum Foundation Inc
- [STC SA2-1261](https://openairdocs.org/stc/SA2-1261): Install Fiberglas bubble tail wheel enclosure doors (enclosing entire wheel). Staggerwing Museum Foundation Inc
- [STC SA2-204](https://openairdocs.org/stc/SA2-204): Installation of one-peice windshield and flush cockpit side-windows. Staggerwing Museum Foundation Inc
- [STC SA2-213](https://openairdocs.org/stc/SA2-213): Installation of modified wing tips. Staggerwing Museum Foundation Inc
- [STC SA2-328](https://openairdocs.org/stc/SA2-328): Installation of Hartzell propeller unfeathering crossfeed system. Staggerwing Museum Foundation Inc
- [STC SA2-338](https://openairdocs.org/stc/SA2-338): Installation of two (2) 25,000 BTU Janitrol Heaters installed one (1) in each wheel well. Staggerwing Museum Foundation Inc
- [STC SA2-523](https://openairdocs.org/stc/SA2-523): Revise horizontal stabilizer angle of incidence from -3.6 degrees to-0.5 degrees. Staggerwing Museum Foundation Inc
- [STC SA249SO](https://openairdocs.org/stc/SA249SO): Increase in takeoff weight to10,200 lbs. and landing weight to9,800 lbs. and extension of aft C.G. limit to (+120.5) at 10,200 lbs. (Model may also be designated as Conrad 10,200.). Staggerwing Museum Foundation Inc
- [STC SA24CE](https://openairdocs.org/stc/SA24CE): Oval passenger windows. Staggerwing Museum Foundation Inc
- [STC SA3-383](https://openairdocs.org/stc/SA3-383): Beech D18S Goodyear wheels and brake assembly. Staggerwing Museum Foundation Inc
- [STC SA3-732](https://openairdocs.org/stc/SA3-732): Full-view passenger window. Staggerwing Museum Foundation Inc
- [STC SA4-120](https://openairdocs.org/stc/SA4-120): Dual airspeed system. Staggerwing Museum Foundation Inc
- [STC SA4-128](https://openairdocs.org/stc/SA4-128): Engines, propellers, revised nacelles, wheel-well doors, air- speed system, fuel system and elevator seal strips. Staggerwing Museum Foundation Inc
- [STC SA4-21](https://openairdocs.org/stc/SA4-21): Fuel system modified to provide dual wobble pumps and suction crossfeed and attendant plumbing. Staggerwing Museum Foundation Inc
- [STC SA4-34](https://openairdocs.org/stc/SA4-34): Main landing gear door. Staggerwing Museum Foundation Inc
- [STC SA53CE](https://openairdocs.org/stc/SA53CE): Stewart-Warner heater 940B/24 in fuselage. Staggerwing Museum Foundation Inc

All 143: https://openairdocs.org/model/beech-c18s/stcs.md

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