- Registered owner
- Unertl Ronald W
- Location
- Waupaca, WI
- Owner type
- Individual
- Serial number
- 2070C
- Year built
- 1971
- Type
- Fixed wing single engine
- Engine
- Reciprocating
- Airworthiness
- Standard, normal
- Airworthiness date
- May 28, 1971
- Certificate issued
- April 12, 2013
- Expires
- April 30, 2029
- Mode S code
- A1AF64
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Franklin 6V 350 model are included below.
On this page
Airworthiness directives that may apply · 14
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1968 | 1 |
|---|---|
| 1969 | 2 |
| 1971 | 2 |
| 1973 | 1 |
| 1979 | 1 |
| 1981 | 1 |
| 1984 | 1 |
| 1996 | 2 |
| 1998 | 1 |
| 2000 | 1 |
| 2008 | 1 |
| 2014 | 1 |
| 2022 | 1 |
Airframe · Maule M-4-220C
AD 2022-03-15Fuel Quantity IndicatorAD 98-15-18 R1WingsAD 2008-24-02Rear elevator control hornInformation bulletins that may apply · 1
Advisory, not mandatory.
Airframe · Maule M-4-220C
SAIB SW-18-31Navigation, Attitude, and Direction Data SystemNTSB investigations · 3
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
NTSB LAX99LA133Accident · No injuriesLimited investigationFinal reportPrescott, AZThe pilot's inadequate compensation for the crosswind condition, which led to a loss of directional control and an inadvertent ground loop.NTSB MKC74DCJ29Accident · No injuriesClosedLincoln, NENTSB SEA72DYC16Accident · No injuriesClosedLagrande, OR
FAA incident reports · 3
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Accident 19990215001369ARoll-Out (Fixed Wing) · Prescott, AZAcft ran off the side of the rwy after landing and sustained substantial damage. Other circumstances are unknown. (.19)on February 15, 1999, at 1045 hours mountain standard time, a Maule M-4-220C, N2077U, ground looped, veered off the runway, and came to rest…Incident 19910630035239IRoll-Out (Fixed Wing) · Yellow Pine, IDMain gear collapsed on landing rollout. Found right upper landing gear oleo strut. Attach bolt broken.Accident 19740216005379ARoll-Out (Fixed Wing) · Lincoln, NEPlt rptd enctrd wind gust drg ldg roll.
Service difficulty reports
No reports matched to N2077UGeneral aviation reporting is voluntary. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Reports on Maule M-4-220C aircraft
STCs that may be installed · 153
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Maule M-4-220C
STC SA01233SEFabrication and installation of Alaskan Bushwheel LLC tail wheel and fork assemblySTC SA02571SEInstallation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).STC SA01800SEFabrication and installation of new or replacement of existing instrument panel lights dimmer control.