# Waco YMF

- Type: Aircraft model (FAA registry)
- Registry code: 9600411
- Manufacturer (registry): WACO
- Model: YMF
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 3
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS ATC 542](https://openairdocs.org/tcds/ATC%20542) (OpenAirDocs)
- Holder: The Waco Aircraft Company
- Registered aircraft: 14
- Page: https://openairdocs.org/model/waco-ymf

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.

None matched.

## Information bulletins (advisory) (1)

- [SAIB SW-18-31](https://openairdocs.org/saib/SW-18-31): NAVIGATION, ATTITUDE, AND DIRECTION DATA SYSTEM. Issued Nov 21, 2018

## Registered aircraft (14)

- [N14128](https://openairdocs.org/aircraft/N14128): [Rex Eeds](https://openairdocs.org/faa-owner/REX%20EEDS), [Claude, TX](https://openairdocs.org/faa-place/TX/Claude), built 1934, S/N 4213
- [N14132](https://openairdocs.org/aircraft/N14132): [Wagner Robert Harry](https://openairdocs.org/faa-owner/WAGNER%20ROBERT%20HARRY), [W Milton, OH](https://openairdocs.org/faa-place/OH/W%20Milton), built 1935, S/N 3957
- [N14134](https://openairdocs.org/aircraft/N14134): [Dream Waco LLC](https://openairdocs.org/faa-owner/DREAM%20WACO%20LLC), [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City), S/N 4211
- [N14300](https://openairdocs.org/aircraft/N14300): [Morozowsky Anthony II](https://openairdocs.org/faa-owner/MOROZOWSKY%20ANTHONY%20II), [Zanesville, OH](https://openairdocs.org/faa-place/OH/Zanesville), S/N 3965
- [N14607](https://openairdocs.org/aircraft/N14607): [Morozowsky Anthony M II](https://openairdocs.org/faa-owner/MOROZOWSKY%20ANTHONY%20M%20II), [Zanesville, OH](https://openairdocs.org/faa-place/OH/Zanesville), built 1944, S/N 4214
- [N15241](https://openairdocs.org/aircraft/N15241): [Branin Barry F](https://openairdocs.org/faa-owner/BRANIN%20BARRY%20F), [Morro Bay, CA](https://openairdocs.org/faa-place/CA/Morro%20Bay), built 1951, S/N 3960
- [N1932J](https://openairdocs.org/aircraft/N1932J): [Burnham Kenneth J](https://openairdocs.org/faa-owner/BURNHAM%20KENNETH%20J), [Carr, CO](https://openairdocs.org/faa-place/CO/Carr), S/N F5-008
- [N23JL](https://openairdocs.org/aircraft/N23JL): [A M Aero LLC](https://openairdocs.org/faa-owner/A%20M%20AERO%20LLC), [Wayzata, MN](https://openairdocs.org/faa-place/MN/Wayzata), S/N F5C-076
- [N33KD](https://openairdocs.org/aircraft/N33KD): [Crnic Paul C](https://openairdocs.org/faa-owner/CRNIC%20PAUL%20C), [Chesterfield, MO](https://openairdocs.org/faa-place/MO/Chesterfield), built 1986, S/N F5-003
- [N503HD](https://openairdocs.org/aircraft/N503HD): [Weiss Elliott](https://openairdocs.org/faa-owner/WEISS%20ELLIOTT), [Fresno, TX](https://openairdocs.org/faa-place/TX/Fresno), built 1989, S/N F5-018
- [N6377M](https://openairdocs.org/aircraft/N6377M): [Mills Air Service Inc](https://openairdocs.org/faa-owner/MILLS%20AIR%20SERVICE%20INC), [Marstons Mills, MA](https://openairdocs.org/faa-place/MA/Marstons%20Mills), built 1988, S/N F50016
- [N72NS](https://openairdocs.org/aircraft/N72NS): [Green & Green Construction Co Of Grenada Inc](https://openairdocs.org/faa-owner/GREEN%20%26%20GREEN%20CONSTRUCTION%20CO%20OF%20GRENADA%20INC), [Grenada, MS](https://openairdocs.org/faa-place/MS/Grenada), built 1988, S/N F5-015
- [N91JM](https://openairdocs.org/aircraft/N91JM): [Walton Thomas M](https://openairdocs.org/faa-owner/WALTON%20THOMAS%20M), [Hudson Falls, NY](https://openairdocs.org/faa-place/NY/Hudson%20Falls), built 1986, S/N F5-004
- [N99Y](https://openairdocs.org/aircraft/N99Y): [Scotty Box R&D LLC](https://openairdocs.org/faa-owner/SCOTTY%20BOX%20R%26D%20LLC), [Fullerton, CA](https://openairdocs.org/faa-place/CA/Fullerton), built 1986, S/N F5-002

## STCs approved for it (76, first 50)

- [STC SA00001WI](https://openairdocs.org/stc/SA00001WI): Operation of airplane on unleaded automotive gasoline.. Petersen Aviation Inc
- [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 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 SA00401BO](https://openairdocs.org/stc/SA00401BO): Installation of a SkyTrax100B UAT receiver. Avidyne Corporation
- [STC SA00410BO](https://openairdocs.org/stc/SA00410BO): Installation of an AV-30-C Multi-Mode Indicator. uAvionix Corporation
- [STC SA00432SE](https://openairdocs.org/stc/SA00432SE): Installation of EGT 701 series fuel flow instrument.. J P Instruments
- [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric.. Aviation Products Systems 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 SA00861SE](https://openairdocs.org/stc/SA00861SE): Installation of J.P. Instruments (JPI) fuel flow indicating system. J P Instruments
- [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 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 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 SA01435SE](https://openairdocs.org/stc/SA01435SE): Installation of J.P. Instruments (JPI) Primary Engine Data Management System. J. P. Instruments
- [STC SA01487SE-D](https://openairdocs.org/stc/SA01487SE-D): Installation of a GDL 69 or GDL 69A XM Satellite Receiver. Garmin International Inc
- [STC SA01692SE  (PAGE 2 OF 2)](https://openairdocs.org/stc/SA01692SE%20%20(PAGE%202%20OF%202)): Installation of a Garmin GMX 200 Multi-Function Display. Garmin International Inc
- [STC SA01695SE (5 OF 5)](https://openairdocs.org/stc/SA01695SE%20(5%20OF%205)): Installation of an antenna. Garmin AT Inc.
- [STC SA01714WI (1 OF 2)](https://openairdocs.org/stc/SA01714WI%20(1%20OF%202)): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems.. Garmin International Inc
- [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC
- [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 SA01818WI](https://openairdocs.org/stc/SA01818WI): Installation of Garmin G5 Electronic Flight Instrument. Garmin International Inc.
- [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc
- [STC SA01835WI](https://openairdocs.org/stc/SA01835WI): Installation of Trig Avionics TY-96 or TY-97 VHF Communications Radio. Peregrine
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC
- [STC SA01899WI](https://openairdocs.org/stc/SA01899WI): Installation of Garmin G3X Touch Electronic Flight Instrument System. Garmin International Inc.
- [STC SA01933LA-D (2 OF 2)](https://openairdocs.org/stc/SA01933LA-D%20(2%20OF%202)): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc
- [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 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 SA02019SE-D (2 OF 3)](https://openairdocs.org/stc/SA02019SE-D%20(2%20OF%203)): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc.
- [STC SA02019WI](https://openairdocs.org/stc/SA02019WI): Installation of the Trig Avionics TX56, TX56A, TX57, or TX57A VHF Nav-Com Radio.. Peregrine
- [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 SA02119SE PAGE 2](https://openairdocs.org/stc/SA02119SE%20PAGE%202): Installation of Garmin GDL 88 ADS-B UAT Transceiver 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 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 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 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 SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC
- [STC SA02511SE (3 OF 3)](https://openairdocs.org/stc/SA02511SE%20(3%20OF%203)): Installation of replacement fuel quantity indicator sending unit(s). CiES Inc.
- [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 SA02594SE](https://openairdocs.org/stc/SA02594SE): SkyView HDX Instrumentation and Autopilot System manufactured. Dynon Avionics
- [STC SA02636SE](https://openairdocs.org/stc/SA02636SE): Installation of Garmin GPS 175 Navigation System and GNX 375 Navigation System with ADS-B In/Out Transponder.. 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 SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc.
- [STC SA02825NY PAGE 2](https://openairdocs.org/stc/SA02825NY%20PAGE%202): Installation of Aerospace Logic Aircraft Instruments. Aerospace Logic 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 SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC
- [STC SA04776NY (1 OF 2)](https://openairdocs.org/stc/SA04776NY%20(1%20OF%202)): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings 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 SA1000GL](https://openairdocs.org/stc/SA1000GL): Modify to a classic 'WACO F5' or 'WACO F5C' configuration.. WACO Classic Aircraft Corporation

All 76: https://openairdocs.org/model/waco-ymf/stcs.md

## NTSB investigations (9)

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 CEN19LA204](https://openairdocs.org/ntsb/CEN19LA204), Jun 22, 2019: Waco YMF-5C (N63WC), Bar Harbor, ME, substantial damage. Probable cause: A total loss of engine power due to a cylinder failure for undetermined reasons.
- [NTSB GAA16CA089](https://openairdocs.org/ntsb/GAA16CA089), Dec 25, 2015: Waco YMF (N99Y), Fullerton, CA, substantial damage. Probable cause: The pilot's failure to maintain directional control during the landing roll.
- [NTSB LAX98LA033](https://openairdocs.org/ntsb/LAX98LA033), Nov 8, 1997: Waco YMF-5 (N369DP), Sedona, AZ, destroyed. Probable cause: The failure and separation of the propeller for undetermined reasons.
- [NTSB MIA97LA222](https://openairdocs.org/ntsb/MIA97LA222), Jul 28, 1997: Waco YMF5 (N14128), Lake Buena Vist, FL, substantial damage. Probable cause: failure of maintenance personnel to follow installation procedures pertaining to the torque of the propeller retention nut, which resulted in a loose propeller retention nut, subsequent fatigue…
- [NTSB MIA97LA058](https://openairdocs.org/ntsb/MIA97LA058), Jan 1, 1997: Waco WMF-5 (N14128), Kissimmee, FL, substantial damage. Probable cause: the pilot's failure to maintain direction control of the airplane after applying the brakes. A factor was the pilot's lack of familiarity with this make and model airplane.
- [NTSB CHI94LA030](https://openairdocs.org/ntsb/CHI94LA030), Nov 2, 1993: Waco YMF-5 (N369DP), Valparaiso, IN, substantial damage. Probable cause: THE PILOT'S INADEQUATE COMPENSATION FOR WIND CONDITIONS WHILE LANDING IN A GUSTY CROSSWIND. FACTORS ASSOCIATED WITH THE ACCIDENT ARE THE GUSTY CROSSWIND AND THE PILOT'S LACK OF EXPERIENCE IN THIS…
- [NTSB MIA89LA076](https://openairdocs.org/ntsb/MIA89LA076), Feb 3, 1989: Waco YMF (N99Y), Key West, FL, substantial damage. Probable cause: THE INABILITY OF THE PLT TO MAINTAIN CONTROL AFTER ENCOUNTERING HIS OWN WAKE TURBULENCE AT A LOW ALTITUDE DURING A STEEP TURNING MANEUVER.
- [NTSB MIA88LA220](https://openairdocs.org/ntsb/MIA88LA220), Jul 13, 1988: Classic YMF-5 (N99Y), Key West, FL, substantial damage
- [NTSB MIA87LA007](https://openairdocs.org/ntsb/MIA87LA007), Oct 15, 1986: Waco YMF (N99Y), Key West, FL, substantial damage

## FAA accident and incident reports (14)

From the FAA Accident/Incident Data System. Reports 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.

- [Accident 20190622007799A](https://openairdocs.org/incident/20190622007799A), Jun 22, 2019: Waco YMF (N63WC), Bar Harbor, ME, Substantial damage. Approximately 15 minutes into the flight, at 1900 feet MSL, the pilot and both passengers heard a loud bang followed by the engine quitting. The pilot…
- [Incident 20170602013149I](https://openairdocs.org/incident/20170602013149I), Jun 2, 2017: Waco YMF (N63WC), Bar Harbor, ME, Minor damage. It was the second flight of the day. One passenger on board. Pilot was landing runway 22 at bhb, the winds were variable between 240 and 270 between 5 and 7…
- [Accident 20151225023259A](https://openairdocs.org/incident/20151225023259A), Dec 25, 2015: Waco YMF (N99Y), Fullerton, CA, Substantial damage. After touchdown and during rollout after a normal approach to runway 24 at Fullerton airport in gusty wind conditions, the aircraft, N99Y, entered a ground…
- [Incident 20050328005719I](https://openairdocs.org/incident/20050328005719I), Mar 28, 2005: Waco YMF (N23JL), Gainesville, FL, Minor damage. (-23) After landing and during taxi wind gust lifted wing of a/c and tipped it up on its nose, destroying the propeller.
- [Accident 19971108032649A](https://openairdocs.org/incident/19971108032649A), Nov 8, 1997: Waco YMF (N369DP), Sedona, AZ, Destroyed. Sightseeing flight. Prop assembly seperated. Crash landed. (From .4) the pilot reported that during the preflight inspection, he examined the propeller while…
- [Accident 19970728023559A](https://openairdocs.org/incident/19970728023559A), Jul 28, 1997: Waco YMF (N14128), Lake Buena Vist, FL, Substantial damage. Engine quit at cruise. Landed short field had to ground loop. Damaged tail broken crankshaft. Repair not legal. (-23) attachment - 1 page FAA airworthiness…
- [Accident 19970101000039A](https://openairdocs.org/incident/19970101000039A), Jan 1, 1997: Waco YMF (N14128), Kissimmee, FL, Substantial damage. Veered off runway on landing roll. Nosed over. Blamed brakes. No problem found. Lacked checkout. One hr in type.
- [Incident 19950810028719I](https://openairdocs.org/incident/19950810028719I), Aug 10, 1995: Waco YMF (N14128), Orlando, FL, Minor damage. Loosing oil and rough engine. Shut down engine. Landed in field. NR7 cylinder studs broke.
- [Accident 19931102042079A](https://openairdocs.org/incident/19931102042079A), Nov 2, 1993: Waco YMF (N369DP), Valparaiso, IN, Substantial damage. Lost direction control landing tailwheel type. Ground looped and flipped over. Minimum flying time in type.
- [Incident 19930714026779I](https://openairdocs.org/incident/19930714026779I), Jul 14, 1993: Waco YMF (N14128), Orlando, FL, Minor damage. Engine quit in flight. Forced landing in a field. Pilot engaged in passenger revenue flight.
- [Incident 19920109002859I](https://openairdocs.org/incident/19920109002859I), Jan 9, 1992: Waco YMF (N33KD), Kahului, HI, Minor damage. Pilot struck a fuel truck while taxiing from hangar to fuel pit.
- [Accident 19890203002519A](https://openairdocs.org/incident/19890203002519A), Feb 3, 1989: Waco YMF (N99Y), Key West, FL, Substantial damage. During tight low altitude turns, over water to spot fish, lost control hit water inverted.
- [Accident 19880713027949A](https://openairdocs.org/incident/19880713027949A), Jul 13, 1988: Waco YMF (N99Y), Key West, FL, Substantial damage. Collided with a vehicle while turning around at operators establishment after landing. Sustained substantial damage
- [Accident 19861015048809A](https://openairdocs.org/incident/19861015048809A), Oct 15, 1986: Waco YMF (N99Y), Key West, FL, Substantial damage. The aircraft flipped over on landing rollout. The cause for the occurrence is undetermined. Suspect parking brake.

## Service difficulty reports (13)

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

- [SDR 2012FA0000686](https://openairdocs.org/sdr/2012FA0000686), Oct 10, 2012: NUT. LOOSE. MANY CYLINDER HOLD DOWN NUTS WERE LOOSE ON INSPECTION OF TORQUE OF THOSE NUTS. THIS HAS BEEN OCCURING ANNUALLY. MFG IS USING A NYLON TYPE SELF LOCKING NUTS TO H
- [SDR 2010FA0000664](https://openairdocs.org/sdr/2010FA0000664), Jun 30, 2010: FITTING. BROKEN. HORIZONTAL AND VERTICAL STABILIZER FLYING WIRE TIE ROD BROKEN.
- [SDR 2002FA0001353](https://openairdocs.org/sdr/2002FA0001353), Nov 1, 2002: PULLEY. WORN. ELEVATOR PULLEYS 20 PERCENT WORN.
- [SDR 2002FA0001352](https://openairdocs.org/sdr/2002FA0001352), Sep 1, 2002: PULLEY. WORN. ELEVATOR PULLEYS WORN.
- [SDR 2002FA0001351](https://openairdocs.org/sdr/2002FA0001351), Jun 16, 2002: PULLEY. WORN. THE INCIDENT OCCURRED ON TAKEOFF ROLL, FORWARD PRESSURE WAS APPLIED TO BRING THE TAIL UP, AT THAT POINT THE CONTROL CABLE BROKE. FURTHER INSPECTION SHOWED THAT 
- [SDR 2001FA0000163](https://openairdocs.org/sdr/2001FA0000163), Aug 3, 2001: STUD. BROKEN. FOUND BROKEN CYLINDER BASE STUD ON NR 4 CYLINDER. AFTER REMOVING BROKEN STUD, FOUND TWO OTHERS BENT, SENT STUDS FOR EVALUATION TO SEE IF THEY MET DESIGN INTENT.
- [SDR AU000718](https://openairdocs.org/sdr/AU000718), Sep 1, 2000: STIFFENER. BROKEN. (AUS) RUDDER LOWER STIFFENER RUSTED AND SEPARATED FROM LOWER RUDDER BOW. SUBMITTER SUSPECTED CAUSED BY TRAPPED WATER. (X)
- [SDR 20000724SH020](https://openairdocs.org/sdr/20000724SH020), Jul 6, 2000: HINGE. BROKEN. FOUND ON ANNUAL INSPECTION, LOWER RUDDER HINGE BROKEN. CAUSE UNKNOWN. PART TT: 275.9 HOURS. (X)
- [SDR AU990440](https://openairdocs.org/sdr/AU990440), May 7, 1999: EXHAUST VALVE. DAMAGED. (AUS) EXHAUST VALVES ON ALL CYLINDERS WERE BADLY DEFORMED ON THE VALVE STEM TIPS. INVESTIGATION FOUND ABNORMAL WEAR ON THE TIPS OF THE INLET VALVES.
- [SDR AU980470](https://openairdocs.org/sdr/AU980470), Apr 25, 1998: BLADE. CRACKED. (AUS) PROPELLER HAD SPLITS DEVELOPING AFT OF THE METAL LEADING EDGE AND BETWEEN LAMINATION MIDWAY ALONG THE CENTER OF BLADE. FINE CRACKS WERE ALSO FOUND IN THE 
- [SDR 97ZZZX3786](https://openairdocs.org/sdr/97ZZZX3786), Jul 16, 1997: RETAIN NUT. FAILED. AIRCRAFT ACCIDENT IN WHICH PROPELLER SEPARATED FROM AIRCRAFT. SUSPECT CAUSE: RETAINING NUT FAILURE. SUBMITTER RECOMMENDATION: RETAINING NUT BE REPLACED AT SPECI
- [SDR 95ZZZX4553](https://openairdocs.org/sdr/95ZZZX4553), Aug 29, 1995: STUD. FAILED. FOLLOWING OVERHAUL, ENGINE WAS PUT IN SERVICE. AT 593 HOURS, CHANGED OUT THE NR 5 CYLINDER AND FOUND NOTHING THAT WOULD HAVE BEEN ALARMING OR INDICATIVE OF WHAT
- [SDR 95ZZZX2743](https://openairdocs.org/sdr/95ZZZX2743), May 22, 1995: JACKSCREW. JAMMED. HORIZONTAL STABILIZER TRIM JAMMED IN-FLIGHT. AFTER LANDING, TRIM WAS INSPECTED. TRIM JACKSCREW WAS JAMMED IN THE BALL (PN 9159). REASON FOR THIS COULD NOT BE DE

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Waco Classic YMF](https://openairdocs.org/model/waco-classic-ymf): 6 registered aircraft, registry code 9600413

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