# NTSB MKC73DCD66: Piper PA-12, N4014M, Davenport, IA, May 13, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 13, 1973
- Place: Davenport, IA · DAVENPORT, IA
- Location: 41.5236° N, 90.5776° W: Placed by OpenAirDocs: center of Davenport, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.5236&lon=-90.5776&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 5, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190504
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC73DCD66
- Page: https://openairdocs.org/ntsb/MKC73DCD66

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1282  73/5/13    DAVENPORT,IOWA      PIPER PA-12         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 33, 921
        TIME - 1730                    N4014M              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 846 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - DAVENPORT MUN
        DEPARTURE POINT             INTENDED DESTINATION
          DAVENPORT,IOWA              LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAXI: FROM LANDING
           COLLIDED WITH: PARKED AIRCRAFT                           TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           WEATHER - THUNDERSTORM ACTIVITY
           MISCELLANEOUS ACTS,CONDITIONS - CONGESTED RAMP/TAXIWAY
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     TAIL WIND 158-202 DEGREES
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          270                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- R BRAKE DIAPHRAM RUPTURED,BRAKE FAILED.HIT CESSNA N4014N,CESSNA N19749 BOTH SUB DMGD.GUSTING COND.
```

## Aircraft

- Registration: [N4014M](https://openairdocs.org/aircraft/N4014M), registered now, S/N 12-2892, built 1947 (OpenAirDocs)
- Reported make and model: PIPER PA-12
- Registry model: [Piper PA-12](https://openairdocs.org/model/piper-pa-12) (registry code 7101202) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Davenport Mun

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19730513013589A](https://openairdocs.org/incident/19730513013589A), May 13, 1973: Piper PA12, Davenport, IA, Substantial damage. R brake diaphram ruptured,brake failed. Hit Cessna N4014N,Cessna N19749 both sub dmgd. Gusting cond.

## Other investigations on N4014M (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 ERA25LA300](https://openairdocs.org/ntsb/ERA25LA300), Aug 14, 2025: Piper PA-12 (N4014M), Inverness, FL, substantial damage, investigation ongoing

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.

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