# Accident 20170719009939A: Enstrom F-28C, Ontario, CA, July 19, 2017

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 19, 2017, 10:15 local time
- Place: Ontario, CA
- Airport: Chino
- Damage: Substantial damage
- Phase of flight: Landing: Approach
- Operating rules: General operating rules (Part 91)
- Location: 33.9714° N, 117.6353° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=33.9714&lon=-117.6353&mi=10
- Aircraft: N5697B, a cancelled registration (https://openairdocs.org/deregistered/N5697B-2018-07-20) (OpenAirDocs)
- Registry model: Enstrom F-28C (registry code 3300407, https://openairdocs.org/model/enstrom-f-28c) (OpenAirDocs)
- Reported make and model: ENSTROM F-28C
- Reported engine: LYCOMING HIO-360-E1AD
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Student
- Pilot flight hours: 33 total, 30 in this make and model, 30 in the last 90 days
- NTSB investigation: [NTSB WPR17LA158](https://openairdocs.org/ntsb/WPR17LA158) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20170719009939A

## Narrative

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

THE PILOT WAS ON FINAL APPROACH TO CHINO AIRPORT (CNO).  THE PILOT ESTABLISHED A  100 FOOT DESCENT RATE AND NOTICED THE ENGINE RPM WAS SLIGHTLY ABOVE 2900 RPM'S.  THE PILOT REDUCED THE THROTTLE SLIGHTLY TO BRING THE ENGINE RPM'S BACK TO 2900 RPM AND KEEP THE DESCENT RATE.  THE PILOT OBSERVED THE MANIFOLD PRESSURE TO BE APPROXIMATELY 10 INCHES HG AND THEN HEARD A SOUND LOUDER THAN NORMAL FROM THE ENGINE. THE PILOT OBSERVED THE ENGINE RPMS TO BE 3300 TO 3500 RPM.  TO REDUCE THE RPM AND AVOID REDUCING THE MANIFOLD PRESSURE THE PILOT RAISED THE COLLECTIVE. THE ENGINE RPM REMAINED HIGH AND DESCENT RATE INCREASED.  PILOT REALZED HE WOULD NOT MAKE IT BACK TO THE AIRPORT AND RADIOED CHINO TOWER THAT HE WAS GOING TO LAND NORTH OF THE AIRPORT. THE AIRCRAFT MADE A HARD LANDING AND  SUSTAINED SUBSTANTIAL DAMAGE.

## 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 WPR17LA158](https://openairdocs.org/ntsb/WPR17LA158), Jul 19, 2017: Enstrom F 28C (N5697B), Ontario, CA, substantial damage. Probable cause: The student pilot's mismanagement of the main rotor rpm, which resulted in low rotor rpm, a high descent rate, and a subsequent hard landing.

## Other reports on N5697B (2)

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

- [Incident 19871029073889I](https://openairdocs.org/incident/19871029073889I), Oct 29, 1987: Enstrm F28C (N5697B), Calumet Park, IL. Engine surge in cruise due to turbocharger failure. Precautionary landing off airport. Turbo number 10257400.
- [Incident 19821012058939I](https://openairdocs.org/incident/19821012058939I), Oct 12, 1982: Enstrm F28C (N5697B), Oakland, CA, Minor damage. Attempting a hovering autorotation from an altitude of three feet, pilot allowed tail rotor to strike the ground.

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.

---
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.