# NTSB CHI78DEV28: Enstrom 28A, N24RB, Bloomington, IL, April 6, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 6, 1978
- Place: Bloomington, IL · BLOOMINGTON, IL
- Location: 40.4758° N, 88.9699° W: Placed by OpenAirDocs: center of Bloomington, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.4758&lon=-88.9699&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 2, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 142659
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI78DEV28
- Page: https://openairdocs.org/ntsb/CHI78DEV28

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0403   78/4/6    BLOOMINGTON,IL      ENSTROM 28A         CR-  0  0  2  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - 1405                    N24RB               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  31, 9020 TOTAL HOURS, 500
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - BLOOMINGTON-NORM.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             TAXI: AERIAL TAXI, OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER COMPENSATION FOR WIND CONDITIONS
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                      1200
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     UNKNOWN/NOT REPORTED
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          290                                                       18
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- WIND GUSTS TO 24KTS.UNINTENTIONAL LIFTOFF DURING RUN-UP.
```

## Aircraft

- Registration: [N24RB](https://openairdocs.org/aircraft/N24RB), registered now, S/N 057, built 1971 (OpenAirDocs)
- Reported make and model: ENSTROM 28A
- Registry model: [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a) (registry code 3300406) (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: Bloomington-Norm.

## 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 19780406005999A](https://openairdocs.org/incident/19780406005999A), Apr 6, 1978: Enstrm F28A, Bloomington, IL, Substantial damage. Wind gusts to 24KTS.unintentional liftoff during run-up.

## Other investigations on N24RB (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ERA14LA108](https://openairdocs.org/ntsb/ERA14LA108), Jan 29, 2014: Enstrom F 28A (N24RB), Memphis, TN, substantial damage. Probable cause: A skid tube clamp weld failure due to high residual stress, which resulted in a skid collapse during landing. Contributing to the accident was the airplane manufacturer’s lack of adequate guidance…

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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