# Incident 20110422010569I: Douglas R4D-8, Honolulu, HI, April 22, 2011

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: April 22, 2011, 14:33 local time
- Place: Honolulu, HI
- Airport: Honolulu International
- Damage: Minor damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: General operating rules (Part 91)
- Operator: K2AA
- Location: 21.3069° N, 157.8583° W: Placed by OpenAirDocs: center of Honolulu, HI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=21.3069&lon=-157.8583&mi=10
- Aircraft: N9796N, registered now (https://openairdocs.org/aircraft/N9796N) (OpenAirDocs)
- Registry model: Douglas R4D-8 (registry code 3023693, https://openairdocs.org/model/douglas-r4d-8) (OpenAirDocs)
- Registry engine: Wright R-1820 series (registry code 67020, https://openairdocs.org/engine/wright-r-1820-series) (OpenAirDocs)
- Reported make and model: DOUGLAS R4D-8
- Reported engine: WRIGHT R-1820-SER
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20110422010569I

## Narrative

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

ALL PREFLIGHT CHECKS, ENGINE START & GROUND RUN-UPS CONDUCTED WERE NORMAL. 12 SECONDS AFTER TAKEOFF:  #1 TACH WENT TO 3500 RPM, #1 MAP DROPPED TO 42".  OIL PSI, FUEL PSI, CHT & OIL TEMP ALL REMAINED NORMAL.  60 SECONDS AFTER TAKE-OFF: OIL PSI WENT TO 0, #1 MAP DROPPED TO 30".  THE PILOTS ATTEMPTED TO FEATHER & SHUTDOWN THE #1 PROPELLER & ENGINE, AND LANDED THE AIRCRAFT ON RUNWAY 26L.  THE PROPELLER DID NOT FEATHER.  10 BOLTS THAT SECURE THE STATIONARY REDUCTION GEAR TO THE CARNKCASE FRONT SECTION FLANGE SHEARED.  THE #1 PROPELLER COULD BE TURNED BY HAND WITH LITTLE EFFORT.  BROKEN PIECES OF METAL AND GEARS WERE FOUND IN THE ENGINE OIL SUMP.  A PARTIAL ENGINE TEARDOWN WAS PERFORMED, REVEALING SUBSTANTIAL DAMAGE WITHIN THE ENGINE. TWO PISTON CONNECTING RODS WERE FOUND BROKEN AND MULTIPLE GEARS WITHIN THE REDUCTION CASE WERE BROKEN INTO SMALL METALLIC CHUNCKS. SDR HAS BEEN SUBMITTED BY OWNER.

## Other reports on N9796N (1)

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

- [Incident 20041126029729I](https://openairdocs.org/incident/20041126029729I), Nov 26, 2004: Doug DC3 (N9796N), Honolulu, HI. (-23) Right engine was shut down due to low oil pressure. The flight crew declared an emergency and landed without any further problems. Finding: oil pressure…

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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