# TCDS ATC 542: The Waco Aircraft Company - Type: Type certificate data sheet - Status: Current - Holder: The Waco Aircraft Company - Revision: 7 - Revised: October 17, 2022 - Product: Aircraft, Small Airplane - Certification basis: Part 36, Part 23, Part 3 - Registered aircraft: 20, by the registry models matched to it (OpenAirDocs) - Data sheet PDF: https://openairdocs.org/files/sha256/9b/ee/9bee11c86910bf84a53659ded0b6a09b393620e990f595289755f2067911d298 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191494270320221122160322.0001 - Page: https://openairdocs.org/tcds/ATC%20542 ## Models (1) As the data sheet lists them. - YMF ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION TYPE CERTIFICATE DATA SHEET NO. ATC 542 ATC 542 Revision 7 WACO YMF 17 Oct 2022 See Note 7. This data sheet which is part of the approved Type Certificate 542 prescribes conditions and limitations under which the product for which the type certificate was issued meets the airworthiness requirements of the Aeronautics Bulletin Regulations. Type Certificate Holder The Waco Aircraft Company See Note 7. I. Model YMF, 3POL-SB (normal category), approved prior to September 30, 1939 (See Aircraft Listings Volume VI) II. Model YMF, 3POL-SB (normal category) modified by Classic Aircraft Corporation (WACO F5 modification), Supplemental Type Certificate SA1000GL, approved March 10, 1986. This model is a modernized version of the original YMF. The five principal areas in which design changes were incorporated are: (1) throttle control, (2) wheels and brakes, and (3) electrical and starting system, (4) steerable tail wheel, (5) engine and propeller. Additionally, construction materials and methods have been updated to current standards. The items listed below have changed from the original YMF. Engine Jacobs R-755B2M or Jacobs R-755B2 Fuel 80 Octane minimum aviation grade gasoline Engine limits 245 hp @ 2050 rpm above 1500 MSL 245 hp @ 1950 rpm SL to 1500 MSL Propeller and propeller limits Fixed pitch wood, Sensenich models: W96JA-72, W96JB-72, W90T6JA-72, W90T6JB-72, W90T6JA-70, W90T6JB-70, W96JA-4-68 or W96JB-4-68 See Notes 9 and 10. Airspeed limits Never exceed = 214 mph C.G. range (77.0”) to (81.0”) All weights Empty weight C.G. range None Datum 88.2” forward of lower wing leading edge Leveling means Top of upper longeron in rear cockpit or top longeron under stabilizer. M aximum weight 2650 pounds Minimum crew 1 Number of seats 3: (1 at 126”), (2 @ 79.0”) Page No. 1 2 3 4 5 6 Rev. No. 1 6 6 6 5 7 ATC 542 2 Maximum baggage 100 pounds maximum (25 pounds front at 65.0”, 75 pounds rear at 152.0”) Fuel capacity Standard - 47 gallons (two 23.5 gallon tanks in upper wing center section) (at 75.0”). Optional - 12.0 gallon tanks in either or both upper wings (at 75.0”). Oil capacity 4 gallons (45.0”) standard 5 gallons (45.0”), required with auxiliary fuel tank installation Control surface movements (1) Ailerons 25 ± 3 up, no down stop (degrees) (2) Elevators 33 ± 2 up, 27 ± 5 down (See Note 5.) (3) Rudder 35 ± 2 left, 35 ± 2 right (See Note 8.) (4) Rudder trim tab is ground adjustable. Manufacturer’s serial numbers F5001 through F5009 III. Model YMF, 3POL-SB (normal category) modified by Classic Aircraft Corporation (WACO F5 modification), Supplemental Type Certificate SA1000GL, approved January 28, 1988 This model is a modernized version of the original YMF. The five principal areas in which design changes were incorporates are: (1) throttle control, (2) wheels and brakes, (3) electrical and starting system, (4) steerable tail wheel, (5) engine and propeller. Additionally, construction materials and methods have been updated to current standards. The items listed below have changed from the original YMF. Items marked “*” are changes made for airplanes designated as “F5,” serial numbers F5010 and up. Engine Jacobs R-755B2M or R-755B2 Fuel 80 octane minimum aviation grade gasoline *Engine limits 275 hp at 2200 rpm *Propeller and propeller limits Fixed pitch wood, Sensenich models: W90T6JA-72, W90T6JB-72, W90T6JA-70, W90T6JB-70, W96JA-4-68 or W96JB-4-68. MT-Propeller model: MT 233 R 150-6AJ for all engines (See Notes 9 and 10.) Airspeed limits Never exceed = 214 mph C.G. range (77.0”) to (81.0”) All weights Empty weight C.G. range None Datum 88.2” forward of lower wing leading edge L eveling means Top of upper longerons in rear cockpit or top longeron under stabilizer. *Maximum weight 2770 pounds Minimum crew 1 *Number of seats 3: (1 at 129.0”), (2 at 79.0”) Maximum baggage 100 pounds maximum (25 pounds front at 65.0”, 75 pounds rear at 152.0”) Fuel capacity Standard - 47 gallons (two 23.5 gallon tanks in upper wing center section) (at 75.0”) Optional - 12.0 gallon tanks in either or both upper wings (at 75.0”) ATC 542 3 Oil capacity 4 gallons (at 45.0”) standard 5 gallons (at 45.0”), required with auxiliary fuel tank installation *Control surface movements (1) Ailerons 25 ± 3 up, no down stop (degrees) (2) Elevator 33 ± 2 up, 27 ± 5 down (See Note 5.) (3) Rudder 30 ± 2 left, 30 ± 2 right (4) Rudder trim tab is ground adjustable. Manufacturer’s serial numbers F5010 through F5036 IV. Model YMF, 3POL-SB (normal category) modified by Classic Aircraft Corporation (WACO F5C modification), Supplemental Type Certificate SA1000GL, approved June 24, 1991 This model is a modernized version of the original YMF. The five principal areas in which design changes were incorporated are: (1) throttle control, (2) wheels and brakes, (3) electrical and starting system, (4) steerable tail wheel, (5) engine and propeller, (6) fuselage lengthened 6 inches. Additionally, construction materials and methods have been updated to current standards. The items listed below have changed from the original YMF. Items marked “*” are changes made for airplanes designated as “F5C,” serial numbers F5C040 and up (See Note 11). Engine Jacobs R-755B2M or R-755B2 Jacobs R-755A2M or R-755A2 Fuel 80 octane minimum aviation grade gasoline *Engine limits 275 hp at 2200 rpm for Jacobs R-755B2M or R-755B2 300 hp at 2200 rpm for Jacobs R-755A2M or R-755A2 *Propeller and propeller limits Fixed pitch wood. Sensenich models: W90T6JA-72, W90T6JB-72, W90T6JA-70, W90T6JB-70, W96JA-4-68 or W96JB-04-68, all eligible for the R755B2/B2M only; MT-Propeller model: MT 233 R 150-6AJ for all engines (See Notes 9 and 10.) Airspeed limits Never exceed - 214 mph *C.G. range (78.0”) to (82.5”) All weights Empty weight C.G. range None Datum 88.2” forward of lower wing leading edge Leveling means Top of upper longeron in rear cockpit or top longeron under stabilizer. Leveling screws under left stabilizer effective S/N F5C121 and up (See Note 11). *Maximum weight 2950 pounds Minimum crew 1 *Number of seats 3: (1 at 131.0”), (2 at 88.0”) *Maximum baggage 100 pounds maximum (25 pounds front at 65.0”, 75 pounds rear at 158.0”) Oil capacity 5 gallons (at 45.0”) standard Fuel capacity Standard - 47 gallons (two 23.5 gallon tanks in upper wing center section) (at 75.0”) Optional - 12.0 gallon tanks in either or both upper wings (at 75.0”) *Control surface movements (1) Ailerons 25 ± 3 up, no down stop (degrees) (2) Elevator 33 ± 2 up, 27 ± 5 down (See Note 5.) (3) Rudder 30 ± 2 left, 30 ± 2 right (4) Rudder trim tab is ground adjustable. *Manufacturer’s serial numbers F5C040 and up (See Note 11). ATC 542 4 V. Model YMF, 3POS-SB (normal category) modified by WACO Classic Aircraft Corporation (WACO F5C Amphibious Float modification), Supplemental Type Certificate SA1000GL, approved May 20, 2020 This model is the same as the land plane YMF 3POL-SB, (WACO F5C Modification), except that the fuselage frame and wings are re-designed to accommodate the gross weight increase and the amphibious float installation per Drawing 18452 Sheet 2. Engine Jacobs R-7552M or R-755A2 Propeller Standard: MT Propeller Model MTV-15-AA-C/C236-29 (93 in) with P-1394 Spinner Optional: MT Propeller Model MTV-15-AA-C/C246-29 (97 in) with P-1394 Spinner NOTE: Notes 9 and 10 are not applicable for the amphibious configuration. Fuel 80 octane minimum aviation grade gasoline Engine Limits 300 hp at 2200 rpm for Jacobs R-755A2M or R-755A2 Propeller Limits Pitch setting at station 88.5 cm (34.8 in.) – Low 9 +/- 0.2 – High 34 +/- 1 Maximum Takeoff Power 300 HP and 2200 RPM Maximum Continuous Power 300 HP and 2200 RPM Governor: Hamilton Standard - 1A4G5 Airspeed limits Never exceed (Vne) - 160 mph C.G. range (78.0”) to (82.5”) All Weights Empty weight C.G. range None Datum 88.2” forward of lower wing leading edge Leveling means Top of upper longeron in rear cockpit of Leveling screws under left stabilizer. Maximum weight 3220 pounds Minimum crew 1 at 131.0” Number of seats 3: (1 at 131.0”), (2 at 88.0”) Maximum baggage 75 pounds at 158” 100 pounds each float locker at 63.6” (200 pounds total) Fuel capacity 47 gallons (two 23.5 US gallon tanks in the upper wing center section (at 75”). Oil capacity 5 US gallons (at 45.0”) Additional Equipment AEROCET 3400 Amphibious Floats FAA Approved AFM Supplement *Control surface movements (1) Ailerons (degrees) (2) Elevator (3) Rudder (4) Rudder trim tab is ground adjustable Manufacturer’s serial numbers Airframes eligible for amphibious float installation are identified by the letter “F” immediately preceding the three-digit serial number. Example: “F5C-8Fxxx” ATC 542 5 DATA PERTINENT TO ALL MODELS Import requirements Not applicable. Certification basis U.S. Department of Commerce Aeronautics Branch, Aeronautics Bulletin 7A, effective as amended January 1, 1933. FAA design approval of “Classic Waco F5” and “Classic WACO F5C” by Supplemental Type Certificate SA1000GL includes compliance with FAA Part 36, through amendment 36-12 for the “F5” models, and through amendment 36-18 for the “F5C” models. The basis for the structural float substantiation shall be a combination of Civil Air Regulations (CAR) Part 3 and 14 CFR Part 23. Production basis Production certificate 328CE Equipment The basic required equipment as prescribed in Department of Commerce, Aeronautics Bulletin 7A, January 1, 1933, must be installed in each aircraft for certification. In addition, the following items of equipment are required for all airplanes modified by Supplemental Type Certificate SA1000GL: (a) FAA Approved Flight Manual\ (b) Current weight and balance report with loading instructions (c) Equipment list (d) Placards required as listed in FAA Approved Flight Manual (e) Those items listed in NOTE 4 See Aircraft listings Volumes VI for airplanes approved prior to September 30, 1939. NOTE 1. The current weight and balance report, including a list of equipment included in the certificated empty weight, an d loading instructions, when necessary, must be provided for each aircraft at the time of original certification. NOTE 2. All placards specified in the appropriate FAA approved flight manual must be displayed. NOTE 3. There are no life limited structural components for all airplanes with serial numbers F5001 and up, or F5C040 and up, or F5C-8F155 and up. NOTE 4. Each airplane manufactured and delivered with serial number F5001 and up, or F5C040 and up, or F5C-8F155 and up will contain: (a) Airplane log book (b) Engine log book (c) FAA Form 337, a record of alterations and return to service (d) FAA approved airplane flight manual (e) Operators manual, Jacobs aircraft engine model R-755A2/B2 series NOTE 5. Any aircraft using a fin modified to Drawing 50916, which incorporates an elevator down stop, should be rigged to have 33 ± 2 up and 23 ± 1 down elevator travel. NOTE 6. Optional equipment is listed on Classic Aircraft Corporation Drawing Number 50295, Revision R, dated 3/17/93, or later FAA approved revision. NOTE 7. Ownership of the Type Certificate was transferred to the public domain when the Waco Aircraft Company ceased to exist. The type certificate was cancelled September 30, 1939, and reinstated March 10, 1986. This is the first type certificate data sheet to exist for ATC 542 (issued October 31, 1988, amended May 18, 19 93, October 26, 2010, September 20, 2017, January 30, 2018, May 22, 2020, September 29, 2021, and October 17, 2022). ATC 542 6 NOTE 8. Aircraft S/N F5001 through S/N F5006 modified and rigged per Classic Aircraft Corporation Drawings 18421-2, -3 Revision V, and 18765, Revision G. Aircraft SD/N F5007 and up have a rudder travel in degrees of 30 ± 2 left and 30 ± 2 right. NOTE 9. The Sensenich fixed pitch wood propellers approved for the Classic WACO F5 and F5C airplane models contain a “JA” or JB” in the designation. Propellers designated “JA” are used with an Air Corps hub which is identifiable by 7/16 inch diameter bolts. Propellers designated “JB” are used with a Jacobs hub which is identifiable by 5/8 inch diameter bolts. NOTE 10. Optional propeller and propeller accessories: 1. Hamilton Standard constant speed installation to Classic Aircraft Corporation drawing number 50670. (a) Hub 2B20, blades 6135-15” Pitch settings at 42 inch station: Low 9° - 12°, high 24° - 27° (Propeller to be indexed with blades in line with crank throw - 0° or 180° position) Diameter: (Not over 93 inches, not under 91-1/8 inches) (b) Governor, Hamilton Standard - 1A4G5 (c) Spinner installation per Classic Aircraft Corporation Drawing number 50765 is optional for use with Hamilton Standard Propeller installation per Drawing 50670. 2. MT Propeller constant speed installation per WACO Classic Aircraft drawing number 50670 and with Jacobs aircraft engine models R755A2 and R755A2M (a) Propeller: Model MTV-15-AA-C/C236-29 or MTV-15-AA-C/C236-29w with P-1394 Spinner Pitch setting at station 88.5 cm (34.8 in.) – Low 9 +/- 0.2 – High 34 +/- 1 Diameter: 236 cm (92.9 in. - commonly known as a 93 inch propeller ) Maximum Takeoff Power 300 HP and 2200 RPM Maximum Continuous Power 300 HP and 2200 RPM (b) Governor: Hamilton Standard - 1A4G5 NOTE 11. All F5C airplanes equipped with the Jacobs R-755A2M or R-755A2 have serial numbers F5C-8-040 and up or F5C-8F155 and up. NOTE 12. The WACO F5C Amphibious Float modification as described in Section V can be accomplished at the Waco Aircraft Company under Production Certificate 328CE ONLY. It is neither possible nor approved to accomplish this modification under STC SA1000GL on a previously built model YMF landplane. END..... ``` ## ADs None name its models. ## Registered aircraft by registry model (OpenAirDocs) - [Waco YMF](https://openairdocs.org/model/waco-ymf): 14 aircraft (registry code 9600411) - [Waco Classic YMF](https://openairdocs.org/model/waco-classic-ymf): 6 aircraft (registry code 9600413) ## STCs approved under this data sheet (61, first 50) - [STC SA02571SE](https://openairdocs.org/stc/SA02571SE): Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).. Garmin International Inc. - [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 SA12406WI](https://openairdocs.org/stc/SA12406WI): Installation of a Garmin AXIS Flight Display System. Garmin International Inc. - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc. - [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc. - [STC SA04046CH PAGE 2](https://openairdocs.org/stc/SA04046CH%20PAGE%202): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc. - [STC SA02594SE](https://openairdocs.org/stc/SA02594SE): SkyView HDX Instrumentation and Autopilot System manufactured. Dynon Avionics - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC - [STC SA4503NM](https://openairdocs.org/stc/SA4503NM): Remove original cloth covering and install Ceconite covering. Ceconite Division of Poly-Fiber Inc. - [STC SA02019WI](https://openairdocs.org/stc/SA02019WI): Installation of the Trig Avionics TX56, TX56A, TX57, or TX57A VHF Nav-Com Radio.. Peregrine - [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC - [STC SA01818WI](https://openairdocs.org/stc/SA01818WI): Installation of Garmin G5 Electronic Flight Instrument. Garmin International Inc. - [STC SA11174SC PAGE 2](https://openairdocs.org/stc/SA11174SC%20PAGE%202): Installation of BendixKing by Honeywell KSN 770 and KSN 765 WAAS LPV approach capable nav/comm systems. Honeywell International Inc (Bendix King) - [STC SA10822SC](https://openairdocs.org/stc/SA10822SC): Installation of EFD1000 Primary Flight Display. Aspen Avionics Inc. - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA00744DE](https://openairdocs.org/stc/SA00744DE): Installation of the Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT31 Transponder and an approved position sensor. Peregrine - [STC SA00765DE](https://openairdocs.org/stc/SA00765DE): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensor. Peregrine - [STC SA02153LA-D PAGE 2](https://openairdocs.org/stc/SA02153LA-D%20PAGE%202): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International Inc. - [STC SA01835WI](https://openairdocs.org/stc/SA01835WI): Installation of Trig Avionics TY-96 or TY-97 VHF Communications Radio. Peregrine - [STC SA01406NY](https://openairdocs.org/stc/SA01406NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and rotary wing. Airwolf Filter Corporation - [STC SA1000GL](https://openairdocs.org/stc/SA1000GL): Modify to a classic 'WACO F5' or 'WACO F5C' configuration.. WACO Classic Aircraft Corporation - [STC SA2586NM](https://openairdocs.org/stc/SA2586NM): Installation of J.P. Instruments temperature monitoring systems.. J P Instruments - [STC SA00382BO](https://openairdocs.org/stc/SA00382BO): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes. Avidyne Corporation - [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 SA00343BO](https://openairdocs.org/stc/SA00343BO): Installation of a single configuration or a dual configuration Avidyne Corporation Integrated Flight Display, Model IFD540 loaded with Release 10.0 software (or later FAA approved release). Avidyne Corporation - [STC SA00352BO PAGE 2](https://openairdocs.org/stc/SA00352BO%20PAGE%202): Installation of an Avidyne Corporation Mode A/C/S Transponder with ADS-B Out capability, Model AXP340 loaded with Version 3.13 software (or later FAA approved version),. Avidyne Corporation - [STC SA02119SE PAGE 2](https://openairdocs.org/stc/SA02119SE%20PAGE%202): Installation of Garmin GDL 88 ADS-B UAT Transceiver System. Garmin International Inc - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric.. Aviation Products Systems Inc. - [STC SA01229SE PAGE 2](https://openairdocs.org/stc/SA01229SE%20PAGE%202): Installation of GNS 480 (CNX80) GPS WAAS Navigator with integrated VHF Navigation and Communication radios. Garmin International Inc - [STC SA02442AK PAGE 2](https://openairdocs.org/stc/SA02442AK%20PAGE%202): Approval of the L-3 Communications NGT 2000/2500 ADS-B system. ADS-B Technologies, LLC - [STC SA01933LA-D PAGE 2](https://openairdocs.org/stc/SA01933LA-D%20PAGE%202): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc - [STC SA02121SE](https://openairdocs.org/stc/SA02121SE): Installation of Garmin GTS 825 (TAS) or GTS 855 (TCAS I) Traffic System. Garmin International Inc - [STC SA02717NY PAGE 1](https://openairdocs.org/stc/SA02717NY%20PAGE%201): Installation of VoiceFlight Systems LLC VFS101 Speech Recognition Module. VoiceFlight Systems LLC - [STC SA02015SE-D](https://openairdocs.org/stc/SA02015SE-D): Installation of Garmin G500 Primary Flight Display (PFD) and Multifunction Display (MFD) System.. Garmin International Inc - [STC SA00432SE](https://openairdocs.org/stc/SA00432SE): Installation of EGT 701 series fuel flow instrument.. J P Instruments - [STC SA00861SE](https://openairdocs.org/stc/SA00861SE): Installation of J.P. Instruments (JPI) fuel flow indicating system. J P Instruments - [STC SA02825NY PAGE 2](https://openairdocs.org/stc/SA02825NY%20PAGE%202): Installation of Aerospace Logic Aircraft Instruments. Aerospace Logic Inc. - [STC SA01692SE](https://openairdocs.org/stc/SA01692SE): Installation of a Garmin GMX 200 Multi-Function Display. Garmin International Inc - [STC SA01487SE-D](https://openairdocs.org/stc/SA01487SE-D): Installation of a GDL 69 or GDL 69A XM Satellite Receiver. Garmin International Inc - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories.. Electronics International 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 SA01695SE](https://openairdocs.org/stc/SA01695SE): Installation of an antenna. Garmin AT Inc. - [STC SA01301WI](https://openairdocs.org/stc/SA01301WI): Installation of Jacobs R-755B2 or R-755B2M engine modified for fuel injection in accordance with STC SE01288WI, J.P. Instruments Fuel Flow meter in accordance with STC SA00432SE, and electric fuel boost pump. Data required: (1) Radial Engines Master Drawing List Report REL1003-13, Revision (IR), dated October 4, 2004, (2) Radial Engines Limited Instruction for Continued Airworthiness Report REL1003-12, Revision (IR), dated October 4, 2004, and (3) FAA Approved Airplane Flight Manual Supplement REL1003-5, Revision (IR), dated January 21, 2005 or later FAA Approved revisions to (1), (2), or (3).. Radial Engines Ltd - [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc - [STC SA09523AC-D](https://openairdocs.org/stc/SA09523AC-D): Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, model ST-897-20/30. S-TEC Corporation - [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches.. Aero Manufacturing Inc. - [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SA00001WI](https://openairdocs.org/stc/SA00001WI): Operation of airplane on unleaded automotive gasoline.. Petersen Aviation Inc All 61: https://openairdocs.org/tcds/ATC%20542/stcs.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.