# NTSB FTW70FRG45: Bell 47D-1, N730J, San Antonio, TX, May 24, 1970

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: May 24, 1970
- Place: San Antonio, TX · SAN ANTONIO, TX
- Location: 29.4241° N, 98.4936° W: Placed by OpenAirDocs: center of San Antonio, TX, within about 13 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.4241&lon=-98.4936&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report March 5, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 181808
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW70FRG45
- Page: https://openairdocs.org/ntsb/FTW70FRG45

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2215  70/5/24    SAN ANTONIO,TEX     BELL 47D-1          CR-  0  0  1  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1130                    N730J               PX-  0  0  0  TRAINING                  AGE 28, 1859 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            17 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - SAN ANTONIO
        DEPARTURE POINT             INTENDED DESTINATION
          SAN ANTONIO,TEX             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - IGNITION SYSTEM: SPARK PLUG
           MISCELLANEOUS ACTS,CONDITIONS - CARBON DEPOSITS
           POWERPLANT - IGNITION SYSTEM: LEADS
           MISCELLANEOUS ACTS,CONDITIONS - ARCING
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NUMBER 5 CYL NOT FIRING.
```

## Aircraft

- Registration: [N730J](https://openairdocs.org/deregistered/N730J-1976-05-27), registration cancelled 1976-05-27, S/N N211, built 1970 (OpenAirDocs)
- Reported make and model: BELL 47D-1
- Registry model: [Bell-Action 47G](https://openairdocs.org/model/bell-action-47g) (registry code 118084P) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: San Antonio

## Other investigations on N730J (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 MIA76FLA04](https://openairdocs.org/ntsb/MIA76FLA04), Aug 11, 1975: Bell 47G (N730J), Graceville, FL, 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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