# NTSB OAK74DVD17: Bell 47G2, N988B, Brentwood, CA, October 13, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 13, 1973
- Place: Brentwood, CA · BRENTWOOD, CA
- Location: 37.9356° N, 121.7190° W: Placed by OpenAirDocs: center of Brentwood, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.9356&lon=-121.7190&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 27, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 188410
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74DVD17
- Page: https://openairdocs.org/ntsb/OAK74DVD17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3042  73/10/13   BRENTWOOD,CALIF     BELL 47G2           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 33, 2821
        TIME - 0800                    N988B               PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 690 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BRENTWOOD,CALIF             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: STARTING SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
          POWER SETTLING.
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1900                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - LETTUCE                                   TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  50                  SWATH RUN-HOW FLOWN - DOWNWIND
        REMARKS- CONTROL LMTD BY STEEP DESCENT AND HEAVY LOAD.
```

## Aircraft

- Registration: [N988B](https://openairdocs.org/deregistered/N988B-1975-08-27), registration cancelled 1975-08-27, S/N 1416 (OpenAirDocs)
- Reported make and model: BELL 47G2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

## 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 19731013033719A](https://openairdocs.org/incident/19731013033719A), Oct 13, 1973: Bell 47G2, Brentwood, CA, Substantial damage. Control lmtd by steep descent and heavy load. Power settling.

## Other investigations on N988B (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 OAK76FVG02](https://openairdocs.org/ntsb/OAK76FVG02), Jul 2, 1975: Bell 47G-2 (N988B), Napa, CA, destroyed, 1 fatal

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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