# NTSB CHI77FA063: Aero Comdr 720, N688R, Wausau, WI, August 4, 1977

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 4, 1977
- Place: Wausau, WI · WAUSAU, WI
- Location: 44.9618° N, 89.6465° W: Placed by OpenAirDocs: center of Wausau, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.9618&lon=-89.6465&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report February 13, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 145517
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77FA063
- Page: https://openairdocs.org/ntsb/CHI77FA063

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4247   77/8/4    WAUSAU,WI           AERO COMDR 720      CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 38, 197
        TIME - 1157                    N688R               PX-  2  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 146 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - WAUKESHA MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          RHINELANDER,WI              WAUSAU,WI
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: DESCENDING
           STALL: SPIN                                              LANDING: GO-AROUND
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
           MISCELLANEOUS ACTS,CONDITIONS - POORLY PLANNED APPROACH
           PILOT IN COMMAND - DELAYED IN INITIATING GO-AROUND
           PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER EMERGENCY PROCEDURES
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- IMPROPER SINGLE-ENGINE PROCEDURES.
```

## Aircraft

- Registration: [N688R](https://openairdocs.org/deregistered/N688R-2013-11-12), registration cancelled 2013-11-12, S/N 720-790-11, built 1960 (OpenAirDocs)
- Reported make and model: AERO COMDR 720
- Registry model: [Aero Commander 720](https://openairdocs.org/model/aero-commander-720) (registry code 0141802) (OpenAirDocs)
- Registry engine: [Lycoming GSO&IGSO-480 series](https://openairdocs.org/engine/lycoming-gso-igso-480-series) (registry code 41529, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Waukesha Muni

## 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 19770804039289A](https://openairdocs.org/incident/19770804039289A), Aug 4, 1977: Rkwell 720RKWELL, WI, Destroyed, 2 fatal

## Other investigations on N688R (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 CHI74AEE30](https://openairdocs.org/ntsb/CHI74AEE30), Oct 21, 1973: Aero Comdr 720 (N688R), Rockton, IL, 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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