# NTSB OAK68A0028: Bell 47G3B1, N7829S, S.Lak Tahoe, CA, September 16, 1967

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: September 16, 1967
- Place: S.Lak Tahoe, CA · S.LAK TAHOE, CA
- Location: 38.9282° N, 119.9810° W: Placed by OpenAirDocs: center of South Lake Tahoe, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.9282&lon=-119.9810&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor, 1 uninjured
- Status: Completed, report February 26, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 114556
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK68A0028
- Page: https://openairdocs.org/ntsb/OAK68A0028

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0984  67/9/16    S.LAK TAHOE,CALIF   BELL 47G3B1         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1445                    N7829S              PX-  0  0  2  OTHER                     AGE 45, 545 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            203 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - SURF-SAND HELIPAD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - EXHAUST SYSTEM: EXTERNAL SUPERCHARGER
           POWERPLANT - EXHAUST SYSTEM: GASKET
           POWERPLANT - EXHAUST SYSTEM: CLAMPS
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (OWNER PERSONNEL)
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER
        REMARKS- SKID EQUIP ACFT,ON PAX HOP CRASHED IN LK, DUE TO AIR LEAKS IN SUPERCHARGER-EXHAUST SYSTEM.
```

## Aircraft

- Registration: [N7829S](https://openairdocs.org/deregistered/N7829S-2013-05-09), registration cancelled 2013-05-09, S/N 6622, built 1967 (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (OpenAirDocs)
- Registry engine: [Lycoming TVO-435-GIA](https://openairdocs.org/engine/lycoming-tvo-435-gia) (registry code 41526, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Surf-Sand Helipad

## Other investigations on N7829S (3)

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 LAX79DUQ28](https://openairdocs.org/ntsb/LAX79DUQ28), May 6, 1979: Bell 47G3B1 (N7829S), Newhall, CA, substantial damage
- [NTSB OAK75DXQ19](https://openairdocs.org/ntsb/OAK75DXQ19), Aug 15, 1974: Bell 47G3B1 (N7829S), Soda Sprngs, CA, substantial damage
- [NTSB OAK71DVA19](https://openairdocs.org/ntsb/OAK71DVA19), Aug 17, 1970: Bell 47G3B1 (N7829S), Kernville, CA, 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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