# Accident 19930209002169A: Amtr ROTORWAYEXEC, Chandler, AZ, February 9, 1993

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: February 9, 1993, 14:55 local time
- Place: Chandler, AZ
- Airport: Chandler Municipal Airport
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: General operating rules (Part 91)
- Location: 33.2391° N, 111.7791° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=33.2391&lon=-111.7791&mi=10
- Aircraft: N89678, a cancelled registration (https://openairdocs.org/deregistered/N89678-2001-06-26) (OpenAirDocs)
- Registry model: Cobb Intl Inc DBA Rotorway INT ROTORWAY EXEC 90 (registry code 13017LM, https://openairdocs.org/model/cobb-intl-inc-dba-rotorway-int-rotorway-exec-90) (OpenAirDocs)
- Reported make and model: AMTR ROTORWAYEXEC
- Reported engine: AMTRRW ROTWY152
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 1,059 total, 611 in this make and model, 111 in the last 90 days
- NTSB investigation: [NTSB LAX93LA111](https://openairdocs.org/ntsb/LAX93LA111) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19930209002169A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ENGINE QUIT IN PATTERN ON TEST FLIGHT. ROCKED ON LANDING. ROLLED. ENGINE HAD SWALLOWED A VALVE. STEM NOT GROUND.

## The NTSB's investigation of this event (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 LAX93LA111](https://openairdocs.org/ntsb/LAX93LA111), Feb 9, 1993: Cobb Intl Exec 90 (N89678), Chandler, AZ, substantial damage. Probable cause: THE MANUFACTURER'S INADEQUATE QUALITY CONTROL WHICH RESULTED IN THE FATIGUE OF THE VALVE STEM. THE SOFT TERRAIN CONTRIBUTED TO THIS ACCIDENT.

## Other reports on N89678 (3)

Matched to the same aircraft by N-number and date.

- [Accident 20000104000899A](https://openairdocs.org/incident/20000104000899A), Jan 4, 2000: Amtr ROTORWAYEXEC (N89678), Chandler, AZ, Substantial damage. (.19) On January 4, 2000, about 1400 hours mountain standard time, an amateur built experimental rotorway exec 9 helicopter, N89678, sustained substantial…
- [Accident 19960522012139A](https://openairdocs.org/incident/19960522012139A), May 22, 1996: Amtr ROTORWAYEXEC (N89678), Chandler, AZ, Substantial damage. Landed hard due low rotor RPM. Folded skid. Rolled over. NR1 piston top broke off. Engine operated defect in piston
- [Accident 19931208046329A](https://openairdocs.org/incident/19931208046329A), Dec 8, 1993: Amtr ROTORWAYEXEC (N89678), Chandler, AZ, Substantial damage. Balance ballast weight not switched to rear for 2 occupants. Was forward for student solo. Crashed nose down.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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