# N181FL: 1956 Convair 440

- Status: Valid registration
- Airframe: [Convair 440](https://openairdocs.org/model/convair-440) (registry code 2422902, 54 seats)
- Engine: [Allison 501-D13 series](https://openairdocs.org/engine/allison-501-d13-series) (registry code 03004)
- Data sheets: [TCDS 6A6](https://openairdocs.org/tcds/6A6) (Kelowna Flightcraft R & D Ltd.), [TCDS E-282](https://openairdocs.org/tcds/E-282) (Rolls-Royce Corporation) (OpenAirDocs)
- Serial number: 387
- Year built: 1956
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, transport
- Airworthiness date: December 16, 1969
- Certificate issued: June 9, 1995
- Expires: July 31, 2027
- Mode S code: A144EB
- Registered owner: [Ifl Group Inc](https://openairdocs.org/faa-owner/IFL%20GROUP%20INC)
- Location: [Waterford, MI](https://openairdocs.org/faa-place/MI/Waterford)
- Owner type: Corporation
- Owner's area on the map: 42.6383° N, 83.4107° W: Placed by OpenAirDocs at the center of ZIP code 48327, 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=181FL
- Page: https://openairdocs.org/aircraft/N181FL

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. The registry lists only the engine series, so ADs for every Allison 501-D13 model are included.

## ADs that may apply (OpenAirDocs): 68 in force

### Matched by airframe (Convair 440)

- [AD 2013-08-10](https://openairdocs.org/ad/2013-08-10): Wings · Rolls Royce Dart 542-4 engines (Kelowna Flightcraft STC SA1096WE or 2 others). Effective May 10, 2013
- [AD 98-08-17](https://openairdocs.org/ad/98-08-17): AFM - Power Levers · Kelowna Flightcraft R & D 240 Series, 340 and 440. Effective May 19, 1998
- [AD 97-04-15](https://openairdocs.org/ad/97-04-15): Fire Extinguisher Bottle Cartridges · Bombardier DHC-8-101, DHC-8-102, DHC-8-103 and 24 more. Effective Mar 7, 1997
- [AD 96-25-12](https://openairdocs.org/ad/96-25-12): Auxiliary Power Units · BAE Systems HS 748 Series 2A, HS 748 Series 2B, 707-100 Long Body and 74 more. Effective Jan 13, 1997
- [AD 95-26-15 R1](https://openairdocs.org/ad/95-26-15-R1): Traffic Alert and Collision Avoidance Systems · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 159 more. Effective Dec 26, 1996
- [AD 96-03-04](https://openairdocs.org/ad/96-03-04): AFM - Limitation, Icing Conditions · Kelowna Flightcraft R & D 240 Series, 340, 440 and 4 more. Effective Feb 28, 1996
- [AD 94-01-05](https://openairdocs.org/ad/94-01-05): Traffic Alert and Collision Avoidance System II Processors · Airbus A340-211, A340-212, A340-213 and 85 more. Effective Feb 4, 1994
- [AD 93-24-06](https://openairdocs.org/ad/93-24-06): Elevator & Rudder Hinge Pins & Bushings · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Jan 18, 1994
- [AD 93-04-03](https://openairdocs.org/ad/93-04-03): Horizontal And Vertical Stabilizers · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Apr 19, 1993
- [AD 92-25-13](https://openairdocs.org/ad/92-25-13): Corrosion Inspection · Kelowna Flightcraft R & D 240 Series, 340, 440 and 4 more. Effective Jan 12, 1993
- [AD 92-06-06](https://openairdocs.org/ad/92-06-06): Insp. Program Revision Structure · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Apr 22, 1992
- [AD 91-12-05](https://openairdocs.org/ad/91-12-05): Elevator Hinge Pins · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Jul 25, 1991
- [AD 90-13-13](https://openairdocs.org/ad/90-13-13): Fuselage Frames · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Jul 30, 1990
- [AD 87-17-10](https://openairdocs.org/ad/87-17-10): Main Landing Gear · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Sep 24, 1987
- [AD 83-01-02](https://openairdocs.org/ad/83-01-02): NLG Axle Fracture · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Jan 19, 1983
- [AD 82-19-02](https://openairdocs.org/ad/82-19-02): Horizontal Stabilizer Attach · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Sep 16, 1982
- [AD 81-22-02](https://openairdocs.org/ad/81-22-02): Elevator Outer Torque Tube · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more. Effective Oct 29, 1981
- [AD 80-08-03](https://openairdocs.org/ad/80-08-03): Aircraft Windows · Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or 2 others. Effective May 5, 1980
- [AD 78-22-04](https://openairdocs.org/ad/78-22-04): Emergency Exit Window · Kelowna Flightcraft R & D 340 and 440 with STC SA1096WE or 2 others. Effective Nov 1, 1978
- [AD 78-17-04](https://openairdocs.org/ad/78-17-04): Emergency Window Release Handle · Kelowna Flightcraft R & D 340, 440 and Military C-131E. Effective Sep 5, 1978
- [AD 74-16-01](https://openairdocs.org/ad/74-16-01): Stringer Inspection · Kelowna Flightcraft R & D 340 and 440. Effective May 4, 1978
- [AD 77-10-11](https://openairdocs.org/ad/77-10-11): Landing Gear Lug · Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or 2 others. Effective May 26, 1977
- [AD 76-07-02](https://openairdocs.org/ad/76-07-02): Emergency Evacuation Systems · Air Cruisers Emergency Evacuation Slides, 340 and 440. Effective Apr 6, 1976
- [AD 68-10-04](https://openairdocs.org/ad/68-10-04): Front Spar Lower Rail · Kelowna Flightcraft R & D 340, 440 and Military C-131E. Effective Jul 30, 1975
- [AD 73-19-11](https://openairdocs.org/ad/73-19-11): Nose Landing Gear Drag Strut · Kelowna Flightcraft R & D 340, 440 and Military C-131E. Effective Oct 19, 1973
- [AD 73-18-01](https://openairdocs.org/ad/73-18-01): Nose Landing Gear · Kelowna Flightcraft R & D 340, 440 and Military C-131E. Effective Aug 27, 1973
- [AD 73-07-01](https://openairdocs.org/ad/73-07-01): Wing Front Spar Lower Cap Cracks · Kelowna Flightcraft R & D 340, 440 and Military C-131E with STC SA1096WE or SA4-1100. Effective Mar 26, 1973
- [AD 67-33-03](https://openairdocs.org/ad/67-33-03): Pressure Fueling Valves · Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or 3 others. Effective Oct 3, 1972
- [AD 71-21-04](https://openairdocs.org/ad/71-21-04): Piston Bearing Lock Pins · Kelowna Flightcraft R & D 340, 440 and Military C-131E. Effective Oct 28, 1971
- [AD 71-02-03](https://openairdocs.org/ad/71-02-03): Main Landing Gear Failure · Kelowna Flightcraft R & D 340, 440 and Military C-131E. Effective Mar 9, 1971
- [AD 70-13-02](https://openairdocs.org/ad/70-13-02): Windshield Longeron Cracks · Kelowna Flightcraft R & D 340 and 440 with STC SA1096WE or SA4-1100. Effective Jul 28, 1970
- [AD 70-12-07](https://openairdocs.org/ad/70-12-07): Kelowna Flightcraft R & D 340 and 440 with STC SA1096WE or SA4-1100. Effective Jun 12, 1970
- [AD 70-12-05](https://openairdocs.org/ad/70-12-05): MLG Trunnion Fitting Inspection · Kelowna Flightcraft R & D 340 and 440. Effective Jun 11, 1970
- [AD 70-12-01](https://openairdocs.org/ad/70-12-01): MLG Beam Web Inspection · Kelowna Flightcraft R & D 340 and 440 with STC SA1096WE or SA4-1100. Effective Jun 4, 1970
- [AD 70-10-03](https://openairdocs.org/ad/70-10-03): Engine Breather Oil Fumes · Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or SA1096WE. Effective May 12, 1970
- [AD 68-16-04](https://openairdocs.org/ad/68-16-04): Exhaust Ducts · Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or SA1096WE. Effective Dec 27, 1968
- [AD 68-07-01](https://openairdocs.org/ad/68-07-01): Direct Vision Window Frame Casting · Kelowna Flightcraft R & D 340, 440 and Military C-131E. Effective Apr 29, 1968
- [AD 67-07-05](https://openairdocs.org/ad/67-07-05): Propeller Gust Lock · Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or SA1096WE. Effective Feb 25, 1967
- [AD 65-12-01](https://openairdocs.org/ad/65-12-01): Main Land Gear Gland Nut · Kelowna Flightcraft R & D 340 and 440. Effective Jun 27, 1965
- [AD 64-18-04](https://openairdocs.org/ad/64-18-04): Nose Landing Gear Retract Forks · Kelowna Flightcraft R & D 240 Series, 340 and 440. Effective Aug 28, 1964
- [AD 64-03-03](https://openairdocs.org/ad/64-03-03): Blades · Boeing DC-6, DC-6A, DC-6B and 26 more. Effective Mar 1, 1964
- [AD 63-15-04](https://openairdocs.org/ad/63-15-04): Nose Landing Gear Rod End Eye-Bolts · Kelowna Flightcraft R & D 340 and 440. Effective Aug 15, 1963
- [AD 63-11-02](https://openairdocs.org/ad/63-11-02): Main Landing Gear · Kelowna Flightcraft R & D 340 and 440. Effective Jun 14, 1963
- [AD 63-10-03](https://openairdocs.org/ad/63-10-03): Lower Wing Skin Fatigue · Kelowna Flightcraft R & D 340 and 440. Effective May 7, 1963
- [AD 63-06-03](https://openairdocs.org/ad/63-06-03): Electrical Fault Detection Panel · Kelowna Flightcraft R & D 340 and 440. Effective Mar 20, 1963
- [AD 70-03-07](https://openairdocs.org/ad/70-03-07): Auxiliary Power Units · Airesearch Auxiliary Power Units, 240 Series, 340 and 1 more
- [AD 60-14-01](https://openairdocs.org/ad/60-14-01): Main Landing Gear · Kelowna Flightcraft R & D 340 and 440
- [AD 59-04-02](https://openairdocs.org/ad/59-04-02): Pilot's Direct-Vision Window · Kelowna Flightcraft R & D 240 Series, 340 and 440
- [AD 59-01-01](https://openairdocs.org/ad/59-01-01): Fire Detector System · Kelowna Flightcraft R & D 240 Series, 340 and 440
- [AD 58-01-03](https://openairdocs.org/ad/58-01-03): Carburetor Setting · Kelowna Flightcraft R & D 340 and 440

### Matched by engine (Allison 501-D13 series)

- [AD 2006-25-12](https://openairdocs.org/ad/2006-25-12): Removal from service of certain turbine rotor components · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 6 more. Effective Jan 23, 2007
- [AD 86-17-06](https://openairdocs.org/ad/86-17-06): Thrust Sensitive Switch Assembly · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 1 more. Effective Sep 15, 1986
- [AD 81-03-02](https://openairdocs.org/ad/81-03-02): 1st Stage Turbine Wheel · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 2 more. Effective Jan 28, 1981
- [AD 80-14-13](https://openairdocs.org/ad/80-14-13): 1st Stage Turbine Wheels · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 2 more. Effective Jul 10, 1980
- [AD 79-25-03](https://openairdocs.org/ad/79-25-03): Second, Third, And Fourth Stage Turbine Wheels · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 2 more. Effective Dec 13, 1979
- [AD 78-09-09](https://openairdocs.org/ad/78-09-09): Third Or Fourth Stage Turbine Wheel · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 2 more. Effective May 12, 1978
- [AD 75-22-05](https://openairdocs.org/ad/75-22-05): Second Stage Turbine Wheels · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 2 more. Effective Oct 23, 1975
- [AD 75-17-32](https://openairdocs.org/ad/75-17-32): Second Stage Turbine Wheels · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 2 more. Effective Aug 14, 1975
- [AD 69-21-03](https://openairdocs.org/ad/69-21-03): First Stage Compressor Wheels · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 6 more. Effective Oct 21, 1969
- [AD 60-21-01](https://openairdocs.org/ad/60-21-01): Torquemeter Housing · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 2 more. Effective Nov 9, 1960
- [AD 60-07-01](https://openairdocs.org/ad/60-07-01): Low Speed Ground Idle · Rolls-Royce 501-D13D and 501-D13E
- [AD 59-21-03](https://openairdocs.org/ad/59-21-03): Compressor Blade · Rolls-Royce 501-D13 and 501-D13A
- [AD 59-18-01](https://openairdocs.org/ad/59-18-01): Low Speed Ground Idle · Rolls-Royce 501-D13 and 501-D13A
- [AD 59-13-01](https://openairdocs.org/ad/59-13-01): Propeller Shaft Roller Bearing · Rolls-Royce 501-D13 and 501-D13A

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

- [AD 74-08-09 R2](https://openairdocs.org/ad/74-08-09-R2) (historical): Waste Receptacles · Aero Spacelines 377, 377MG, 377SGT and 268 more. Effective Jul 29, 1996
- [AD 2003-07-02](https://openairdocs.org/ad/2003-07-02) (historical): Turbine rotor components · 501-D13, 501-D13A, 501-D13D and 6 more. Effective May 7, 2003

All 70: https://openairdocs.org/aircraft/N181FL/ads.md

## Information bulletins (advisory) (2 in force)

- [SAIB NE-07-24](https://openairdocs.org/saib/NE-07-24): Fuel cross-feeding. Issued Apr 3, 2007
- [SAIB NE-04-53](https://openairdocs.org/saib/NE-04-53): . Issued Feb 17, 2004

## NTSB investigations (1)

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 CHI05IA273](https://openairdocs.org/ntsb/CHI05IA273), Sep 22, 2005: Convair Div. of Gen. Dynamics 440 (N181FL), Kenosha, WI, incident, minor damage. Probable cause: The flight crew failed to verify that the cargo was secured before takeoff.

## 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 20050922030889I](https://openairdocs.org/incident/20050922030889I), Sep 22, 2005: Cvac 440 (N181FL), Kenosha, WI, Minor damage. (-23) On 09-22-05 at approx. 0122 local N181FL on flight from enw to mke departing on rwy 24R. At about 400' of rwy the load (cargo) shifted and aircraft…

## Service difficulty reports (4)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR VGCA20201125001](https://openairdocs.org/sdr/VGCA20201125001), Nov 25, 2020: FIRE LOOP. SHORTED. ZONE 3 (WHEEL WELL) FIRE WARNING ON NR 2 ILLUMINATED AFTER TAKE OFF. SHUT DOWN NR 2 ENGINE, DISCHARGED PRIMARY FIRE BOTTLES AND RETURNED TO KMIA.
- [SDR VGCA20191108001](https://openairdocs.org/sdr/VGCA20191108001), Nov 8, 2019: HINGE. CRACKED. WHILE PERFORMING TASK CARD SSD 52-3-3 "2 YEAR REPEAT" INSPECTION DISCOVERED HINGE NODE WAS CRACKED. LOCATION OF NODE DAMAGE GROUP F NODE L. REPAIRED IAW DRAWING
- [SDR VGCA20160404001](https://openairdocs.org/sdr/VGCA20160404001), Apr 4, 2016: RELEASE CABLE. BROKEN. LEFT MAIN GEAR FAILED TO EXTEND NORMALLY. EMER RELEASE WORKED NORMAL.
- [SDR VGCA20131108001](https://openairdocs.org/sdr/VGCA20131108001), Nov 8, 2013: SKIN. CRACKED. LEFT WING LOWER SKIN REPAIR AT DRAIN FITTING BETWEEN WS 4 & 5.

## STCs that may be installed (OpenAirDocs) (62, 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 (Convair 440)

- [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 ST00892LA](https://openairdocs.org/stc/ST00892LA): Installation of Emergency Vision Assurance System (EVAS). VisionSafe LLC
- [STC ST04672CH](https://openairdocs.org/stc/ST04672CH): Installation of FreeFlight Systems RA-5500 Radio Altimeter system. IFL Group Inc
- [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 SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc
- [STC SA3276SO](https://openairdocs.org/stc/SA3276SO): Installation of a dual TRA-67 mode S transponder system. Honeywell International Inc
- [STC ST00870NY](https://openairdocs.org/stc/ST00870NY): Installation of a Fruehauf Floor and Cargo Net. Kelowna Flightcraft Ltd
- [STC SA195SW](https://openairdocs.org/stc/SA195SW): Structural installation of Bendix ANA-12A-1 doppler antenna. Associated Air Center, Inc. - c/o CT Corporation System
- [STC ST02632LA](https://openairdocs.org/stc/ST02632LA): Modification to replace the existing Mode S Transponder system with ACSS NXT-700 Mode S Transponder with ADS-B Out and optionally install ACSS NXG-900 GPS as a position source for ADS-B Out. Aviation Communications and Surveillance Systems
- [STC ST04220CH](https://openairdocs.org/stc/ST04220CH): Installation of a FreeFlight 2101 I/O Approach Plus GPS Navigation System. IFL Group Inc
- [STC ST03410CH](https://openairdocs.org/stc/ST03410CH): Modification from a dual autopilot to a single autopilot configuration, by installing a configuration adapter in place of the existing FZ-450. IFL Group Inc
- [STC ST03006AT](https://openairdocs.org/stc/ST03006AT): Installation of the Honeywell MK VI Enhanced Ground Proximity Warning System (EGPWS) to a Kelowna Flightcraft (Convair) Model 340/440. Contact Aviation LLC
- [STC ST03005AT](https://openairdocs.org/stc/ST03005AT): Installation of the Collins Traffic Collision Avoidance System 4000 (TCAS II). Contact Aviation LLC
- [STC ST03340NY](https://openairdocs.org/stc/ST03340NY): Installation of Dual CMA-5024 GPS/SBAS Landing System Sensor Units, Dual CMA-5025 SBAS Control Panels, and an Enhanced Airborne Data Loader Unit. William J. Hughes FAA Technical Center
- [STC SA3-420](https://openairdocs.org/stc/SA3-420): Main cabin seat installations(including divan and seat belts). Sabreliner Aviation LLC
- [STC SA3-486](https://openairdocs.org/stc/SA3-486): Interior cabin configuration - general floor plan (20 passenger configuration). Sabreliner Aviation LLC
- [STC SA3-487](https://openairdocs.org/stc/SA3-487): Janitrol heater installation(100,000 BTU). Sabreliner Aviation LLC
- [STC SA3-488](https://openairdocs.org/stc/SA3-488): Installation of radar nose, Bendix ANT-1B antenna and pitot modification (including Radome fabrication). Sabreliner Aviation LLC
- [STC ST02839CH](https://openairdocs.org/stc/ST02839CH): Reduction of payload to 7500 lbs. Installation of placard per Rezich & Rezich drawing RR002. Rezich and Rezich Aviation Consulting Inc
- [STC SA5002NM](https://openairdocs.org/stc/SA5002NM): Installation of provisions for side looking radar. General Dynamics Advanced Information systems
- [STC ST01824NY](https://openairdocs.org/stc/ST01824NY): Installation of Northern Airborne Technology Satphone. Northern Airborne Technology Ltd
- [STC SA1992NM](https://openairdocs.org/stc/SA1992NM): Installation of a de-icing system on Rolls Royce RK45524A engine inlet cowl. ROBERT W. MURRAY
- [STC SA2220NM](https://openairdocs.org/stc/SA2220NM): This modification splits the nose fairing assembly P/N 906425-201, Rev. M P/N 9064135-1, Rev. A, and P/N 1914-1, Rev. C. (440 MILITARY C-131E MODIFIED IN ACCORDANCE WITH STC SA4-1100). ROBERT W. MURRAY
- [STC SA3105NM](https://openairdocs.org/stc/SA3105NM): Installation of a de-icing system externally on the Dowty Rotol Part Number (C) 4CM/71 Propeller Spinner. ROBERT W. MURRAY
- [STC ST01798LA](https://openairdocs.org/stc/ST01798LA): Installation of a flight deck door. Quiet Wing Technologies, Inc
- [STC SA125CE](https://openairdocs.org/stc/SA125CE): Installation of Hoskins Supplemental Model B of F High Intensity Wing Tip Lights, Model C or 30-0329-3 Dual Tail Light, with or without Model 2 High Intensity Fuselage Lights. BF Goodrich Aerospace
- [STC SA379CE](https://openairdocs.org/stc/SA379CE): Installation of Hoskins Twilighter MK V High Intensity Aircraft Lighting System. This is a Supplemental Condenser Discharge (Strobe) Light System, consisting of five (5) Light Units and a Power Supply. BF Goodrich Aerospace
- [STC ST03004NY](https://openairdocs.org/stc/ST03004NY): Installation of new MIL-C-5015 connectors at the wing to fuselage interface must be in accordance with Kelowna Flightcraft Ltd.Master Drawing List K116-00002 Revision NC, dated March 20, 2009 or later Transport Canada approved revision. Kelowna Flightcraft Ltd
- [STC ST00682WI-D](https://openairdocs.org/stc/ST00682WI-D): Modification of Collins VHF-20/VHF-20A/VHF-20B VHF COMM Receiver Transmitter with CTL-20 Control Pro Line I System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System Installation in accordance with Collins Installation Instructions as listed on AML No. ST00682WI-D, Revision -, or later FAA approved revisions. Rockwell Collins Inc
- [STC ST02737NY](https://openairdocs.org/stc/ST02737NY): The installation of new annunciator hood. Kelowna Flightcraft Ltd
- [STC SA6088NM](https://openairdocs.org/stc/SA6088NM): Conversion of the 6A6 Type Certified Aircraft into a Model CV 5800 by installation of Allison 501-D22G Engines per STC SA4-1100, Hamilton Standard Propellers per STC SA1825NM and lengthening the fuselage 14 ft. 3.0 inches with all design changes. Kelowna Flightcraft Ltd
- [STC ST02671NY](https://openairdocs.org/stc/ST02671NY): Palletized Cargo Interior. Kelowna Flightcraft Ltd
- [STC ST02591CH](https://openairdocs.org/stc/ST02591CH): Installation of dual Honeywell TRA-45A TDU/Radio Altimeter Indicators. IFL Group Inc
- [STC ST02488NY](https://openairdocs.org/stc/ST02488NY): The installation of Honeywell TCAS II System. Kelowna Flightcraft Ltd
- [STC ST02489NY](https://openairdocs.org/stc/ST02489NY): The installation of Honeywell Mark VI Enhanced Ground Proximity Warning System. Kelowna Flightcraft Ltd
- [STC ST03062AT](https://openairdocs.org/stc/ST03062AT): Installation of a single Sandel P/N ST3400-001 Terrain Awareness and Warning System with Remote Magnetic Indicator (TAWS/RMI) in accordance with DC Aerospace Report No. MDL-2524, Revision A, dated March 4, 2005 or later FAA approved revision. Air Tahoma
- [STC SA7772SW](https://openairdocs.org/stc/SA7772SW): Replacement of existing torquemeters. AVMAR a Michigan Corporation
- [STC ST01901NY](https://openairdocs.org/stc/ST01901NY): Modification of Propeller Feathering System. Kelowna Flightcraft Ltd
- [STC ST02782AT](https://openairdocs.org/stc/ST02782AT): Modification of a cargo restraint system in accordance with DER Services Master Document List No. MDL-2003-228-1, dated December 1, 2003, or later FAA approved revision. DER Services
- [STC SA2-286](https://openairdocs.org/stc/SA2-286): Installation of three-place divan. Signature Flight Support Corporation
- [STC SA2-843](https://openairdocs.org/stc/SA2-843): Installation of Jack and Heintz 30 volt 400 amp. generator. Signature Flight Support Corporation
- [STC SA2SW](https://openairdocs.org/stc/SA2SW): Auxiliary power battery (emergency D.C. power and emergency feathering system). Signature Flight Support Corporation
- [STC SA2302WE](https://openairdocs.org/stc/SA2302WE): Modification of pedestal flight idle stop and lift to reverse system. DeVore Aviation Corporation of America, a New Mexico Corporation
- [STC SA00651SE](https://openairdocs.org/stc/SA00651SE): Installation of a Dual Collins PN-101 Pictorial Navigation System. American Avionics Inc
- [STC SA3709NM](https://openairdocs.org/stc/SA3709NM): Installation of Fruehauf 150#/sq. ft. cargo floor and cargo interior. Hamilton Aviation Co
- [STC SA1174WE](https://openairdocs.org/stc/SA1174WE): Installation of Fuel jettison system. Rogerson ATS
- [STC SA1132WE](https://openairdocs.org/stc/SA1132WE): Installation of an underwing pressure refueling system and fuel level indicator. Rogerson ATS
- [STC SA2105SW-AC](https://openairdocs.org/stc/SA2105SW-AC): Installation of Total Temperature Sensor, Static Defect Corrector, and Omega Nav System with interface into Pilot Flight Director System. Federal Aviation Administration
- [STC SA4075SW](https://openairdocs.org/stc/SA4075SW): Installation of BKM 100PHM-2 pitot head monitor system. BKM Systems
- [STC ST209RM](https://openairdocs.org/stc/ST209RM): Installation of flight attendant shoulder harness. Frontier Airlines Inc

All 62: https://openairdocs.org/aircraft/N181FL/stcs.md

## Related

- Other Convair 440 aircraft: https://openairdocs.org/model/convair-440/aircraft.md
- The Allison 501-D13 series engine: https://openairdocs.org/engine/allison-501-d13-series.md

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