# NTSB CHI74AC045: Douglas DC3A, N8661, Ypsilanti, MI, December 2, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 2, 1973
- Place: Ypsilanti, MI · YPSILANTI, MI
- Location: 42.2444° N, 83.6212° W: Placed by OpenAirDocs: center of Ypsilanti, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2444&lon=-83.6212&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 1, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 187611
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI74AC045
- Page: https://openairdocs.org/ntsb/CHI74AC045

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3635   73/12/2   YPSILANTI,MICH      DOUGLAS DC3A        CR-  0  0  2  MISCELLANEOUS             ATP,FLIGHT INSTR., AGE
        TIME - 1330                    N8661               PX-  0  0  0  FERRY                     UNK/NR, 15000 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 500 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - WILLOW RUN
        DEPARTURE POINT             INTENDED DESTINATION
          JACKSON,MICH                YPSILANTI,MICH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: PARKED AIRCRAFT                           TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           SYSTEMS - HYDRAULIC SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - LOW FLUID LEVEL
           MISCELLANEOUS ACTS,CONDITIONS - PRESSURE TOO LOW
        FACTOR(S)
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
           COPILOT - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - INSTRUMENTS-MISREAD OR FAILED TO READ
        REMARKS- AIRLOCK L ENG HYD SYST.LOW ACCUMULATOR LOAD.MINOR DMG TO C46,N67970.
```

## Aircraft

- Registration: [N8661](https://openairdocs.org/deregistered/N8661-2023-01-23), registration cancelled 2023-01-23, S/N 4951, built 1942 (OpenAirDocs)
- Reported make and model: DOUGLAS DC3A
- Registry model: [Douglas DC3A](https://openairdocs.org/model/douglas-dc3a) (registry code 3021433) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-1830 series](https://openairdocs.org/engine/pratt-whitney-r-1830-series) (registry code 52020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Willow Run

## 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 19731202041709A](https://openairdocs.org/incident/19731202041709A), Dec 2, 1973: Doug C52B, Ypsilanti, MI, Substantial damage. Airlock l eng hyd syst. Low accumulator load. Minor dmg to C46,N67970.

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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