# NTSB NYC73DHD73: Brantly B-2, N4997C, Downingtown, PA, December 19, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 19, 1972
- Place: Downingtown, PA · DOWNINGTOWN, PA
- Location: 40.0085° N, 75.7018° W: Placed by OpenAirDocs: center of Downingtown, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.0085&lon=-75.7018&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 5, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 169032
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC73DHD73
- Page: https://openairdocs.org/ntsb/NYC73DHD73-169032

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2945  72/12/19   DOWNINGTOWN,PA      BRANTLY B-2         CR-  0  0  1  NONCOMMERCIAL             STUDENT, AGE 27, 79 TOTAL
        TIME - 1650                    N4997C              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - SHANNON FIELD
        DEPARTURE POINT             INTENDED DESTINATION
          MALVERN,PA                  DOWNINGTOWN,PA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: DESCENDING
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - MISMANAGEMENT OF FUEL
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
           PILOT IN COMMAND - MISJUDGED DISTANCE,SPEED,AND ALTITUDE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        REMARKS- FUEL EXHAUSTED SHORT OF DEST.HARD AUTOROTATIVE LDG.
```

## Aircraft

- Registration: [N4997C](https://openairdocs.org/deregistered/N4997C-2012-08-09), registration cancelled 2012-08-09, S/N 32, built 1960 (OpenAirDocs)
- Reported make and model: BRANTLY B-2
- Registry model: [Brantly B-2](https://openairdocs.org/model/brantly-b-2) (registry code 1440502) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Shannon Field

## Other investigations on N4997C (2)

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 NYC70D0002](https://openairdocs.org/ntsb/NYC70D0002-107185), Nov 23, 1969: Brantly B-2 (N4997C), Millville, NJ, destroyed
- [NTSB UNK64X1476](https://openairdocs.org/ntsb/UNK64X1476), Apr 26, 1964: Brantly B2 (N4997C), Thetford, VT, substantial damage

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.

---
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.