# NTSB CHI77FA038: Brantly B-2, N2131U, Tremont, IL, April 2, 1977

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: April 2, 1977
- Place: Tremont, IL · TREMONT, IL
- Location: 40.5249° N, 89.4895° W: Placed by OpenAirDocs: center of Tremont, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.5249&lon=-89.4895&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report January 5, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 152435
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77FA038
- Page: https://openairdocs.org/ntsb/CHI77FA038

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4232   77/4/2    TREMONT,IL          BRANTLY B-2         CR-  2  0  0  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 0945                    N2131U              PX-  0  0  0  DUAL                      AGE 26, 1620 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            73 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LAYNES AUCTION
        DEPARTURE POINT             INTENDED DESTINATION
          PEORIA,IL                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- M/R BLADES & TRANSMISSION SEPD.
```

## Aircraft

- Registration: [N2131U](https://openairdocs.org/deregistered/N2131U-1977-07-14), registration cancelled 1977-07-14, S/N 179 (OpenAirDocs)
- Reported make and model: BRANTLY B-2
- Registry model: [Brantly B-2](https://openairdocs.org/model/brantly-b-2) (registry code 1440502) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Laynes Auction

## 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 19770402041669A](https://openairdocs.org/incident/19770402041669A), Apr 2, 1977: Hynes B2, IL, Destroyed

## Other investigations on N2131U (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 MKC66A0066](https://openairdocs.org/ntsb/MKC66A0066), Jun 16, 1966: Brantly B-2 (N2131U), N.Platte, NE, 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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