# NTSB CHI77FEE18: Aero Comdr 112A, N1346J, Half Day, IL, April 17, 1977

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 17, 1977
- Place: Half Day, IL · HALF DAY, IL
- Location: 42.2011° N, 87.9334° W: Placed by OpenAirDocs: center of Half Day, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2011&lon=-87.9334&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 3 uninjured
- Status: Completed, report November 17, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 201387
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77FEE18
- Page: https://openairdocs.org/ntsb/CHI77FEE18-201387

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2219  77/4/17    HALF DAY,IL         AERO COMDR 112A     CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 50, UNK/NR
        TIME - 1450                    N1346J              PX-  0  0  3  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 19 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - CHICAGOLAND
        DEPARTURE POINT             INTENDED DESTINATION
          DELAVAN,WI                  WHEELING,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: DESCENDING
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - WET,SOFT GROUND
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- #2 CONROD CAP BROKEN,BOLTS NOT FOUND.
```

## Aircraft

- Registration: [N1346J](https://openairdocs.org/aircraft/N1346J), registered now, S/N 346, built 1975 (OpenAirDocs)
- Reported make and model: AERO COMDR 112A
- Registry model: [Rockwell International 112A](https://openairdocs.org/model/rockwell-international-112a) (registry code 7630302) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Chicagoland

## 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 19770417011429A](https://openairdocs.org/incident/19770417011429A), Apr 17, 1977: Rkwell 112A, Half Day, IL, Substantial damage. #2 Conrod cap broken,bolts not found.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.