# NTSB DEN67A0057: Hughes 269B, N9306F, Broomfield, CO, March 27, 1967

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 27, 1967
- Place: Broomfield, CO · BROOMFIELD, CO
- Location: 39.9205° N, 105.0867° W: Placed by OpenAirDocs: center of Broomfield, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.9205&lon=-105.0867&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 18, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 117790
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN67A0057
- Page: https://openairdocs.org/ntsb/DEN67A0057

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0302  67/3/27    BROOMFIELD,COLO     HUGHES 269B         CR-  0  0  1  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 1345                    N9306F              PX-  0  0  1  BUSINESS                  46, 12294 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            750 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - JEFFERSON COUNTY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - OIL STARVATION
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           PILOT IN COMMAND - IMPROPER LEVEL OFF
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- S.I.1029B,CYL BASE NUT TIGHTENING PROC,DTD 8/5/66 NOT COMPLIED WITH DURING TOP OVRHL 7 HRS PRIOR.
```

## Aircraft

- Registration: [N9306F](https://openairdocs.org/deregistered/N9306F-2013-03-18), registration cancelled 2013-03-18, S/N 0008, built 1964 (OpenAirDocs)
- Reported make and model: HUGHES 269B
- Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Jefferson County

## Other investigations on N9306F (5)

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 DEN77FTE28](https://openairdocs.org/ntsb/DEN77FTE28), Mar 24, 1977: Hughes 269B (N9306F), Erie, CO, destroyed
- [NTSB DEN72FTE70](https://openairdocs.org/ntsb/DEN72FTE70), May 18, 1972: Hughes 269B (N9306F), Fort Collins, CO, destroyed
- [NTSB FTW65A0116](https://openairdocs.org/ntsb/FTW65A0116), May 18, 1965: Hughes 269B (N9306F), Lubbock, TX, substantial damage
- [NTSB FTW65A0107](https://openairdocs.org/ntsb/FTW65A0107), Apr 30, 1965: Hughes 269B (N9306F), Lamesa, TX, substantial damage
- [NTSB UNK64X3615](https://openairdocs.org/ntsb/UNK64X3615), Aug 26, 1964: Hughes 269B (N9306F), Wilson, TX, 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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