# NTSB IAD73FIA13: Bell 47G-4A, N7949J, Washington, DC, April 5, 1973

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: April 5, 1973
- Place: Washington, DC · WASHINGTON, DC
- Location: 38.8951° N, 77.0364° W: Placed by OpenAirDocs: center of Washington, DC, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.8951&lon=-77.0364&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report August 27, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 173556
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD73FIA13
- Page: https://openairdocs.org/ntsb/IAD73FIA13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1877   73/4/5    WASHINGTON,DC       BELL 47G-4A         CR-  0  1  1  MISCELLANEOUS             COMMERCIAL, AGE 47, 741
        TIME - 2306                    N7949J              PX-  0  0  0  POLICE PATROL             TOTAL HOURS, 531 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - WASHINGTON NATL
        DEPARTURE POINT             INTENDED DESTINATION
          WASHINGTON,DC               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: WIRES/POLES                               LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NR 6 CYL CONROD CAP BOLT FAILED. LND IN STREET INTERSECTION.
```

## Aircraft

- Registration: [N7949J](https://openairdocs.org/deregistered/N7949J-1979-01-11), registration cancelled 1979-01-11, S/N 7759 (OpenAirDocs)
- Reported make and model: BELL 47G-4A
- Registry model: [Bell 47G-4A](https://openairdocs.org/model/bell-47g-4a) (registry code 1181031) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Washington Natl

## 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 19730405011549A](https://openairdocs.org/incident/19730405011549A), Apr 5, 1973: Bell 47G3B1, Washington, DC, Substantial damage. Nr 6 cyl conrod cap bolt failed. Lnd in street intersection.

## Other investigations on N7949J (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 NYC72FIA17](https://openairdocs.org/ntsb/NYC72FIA17), Mar 23, 1972: Bell 47G-4A (N7949J), Washington, DC, 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.

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