Individually Owned: 150,657
Corporate Owned: 137,281
Dillingham Airfld Airport
Aircraft Accident/Incident Report
Mokuleia, Hawaii 96791
Saturday, May 22, 1999 19:30 HST
NTSB Narrative Summary Released at Completion of Accident
Following the 12th sport parachute jump of the day, which occurred after sunset, ground witnesses observed the airplane descend into the ocean in a left wing low, nose down attitude. They did not hear the engines sputtering or popping, or see the airplane make any erratic movements during its descent. Skydivers indicated that the two previous flights had been conducted at altitudes of at least 18,000 feet, and the accident flight and subsequent jump were made at 20,000 feet. During this final jump flight, one of the skydivers stated he had a hard time breathing and felt nauseous. The skydivers also noted that the pilot was unable to maintain a steady course and did not respond well to minor course corrections. No supplemental oxygen was found onboard the airplane during the recovery or subsequent inspection phases of the investigation. No skydiver observed the pilot using supplemental oxygen. The airplane manufacturer noted that the pressurization system would have been rendered inoperable due to a non-sealed cockpit door. Hypoxia is defined as a physiological condition where a person is bereft of needed oxygen. Judgment is poor and reaction time delayed. Total incapacitation coupled with a loss of consciousness can occur with little or no warning. The airframe, engines, and propellers were examined with no preexisting impact anomalies found.
NTSB Probable Cause Narrative
The pilot's incapacitation due to the effects of hypoxia from repeated flights to altitudes above 18,000 feet msl without supplemental oxygen.
Event Information
| Type of Event | Accident |
| Event Date | 5/22/1999 |
| Event Day of the Week | Saturday |
| Time of Event | 1930 |
| Event Time Zone | Hawaii Standard Time |
| Event City | MOKULEIA |
| Event State | HAWAII |
| Event Country | -- |
| Zipcode of the event site | 96791 |
| Event Date Year | 1999 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | DILLINGHAM AIRFLD AIRPORT |
| Event Location Nearest Airport ID | HDH |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 3 |
| Degrees magnetic from airport | 180 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1853 Hawaii Standard Time |
| Direction of event from weather observation facility (degrees) | 125 |
| Weather Observation Facility ID | HNL |
| Elevation of weather observation facility | 13 |
| Distance of event from weather observation facility (units?) | 25 |
| Time Zone of the weather observation | HST |
| Lighting Conditions | Dusk |
| Lowest Ceiling Height | 5500 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 26 |
| Dew Point at event time (in degress fahrenheit) | 18 |
| Wind Direction (degrees magnetic) | 40 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1619 |
| NTSB Notification Source | -- |
| NTSB Notification Date | May 22 1999 12:00AM |
| NTSB Notification Time | 2327 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Jan 10 2001 10:04AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N301DK |
| NTSB Number | LAX99LA190 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Beech |
| Aircraft Model | B90 |
| Aircraft Series Identifier | B90 |
| Aircraft Serial Number | LJ-372 |
| Certified Max Gross Weight | 9650 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 1 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | May 20 1999 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | PAC INT'L SKYDIVING CENTER |
| Aircraft Owner Street Address | P.O. BOX 729 |
| Aircraft Owner City | HALEIWA |
| Aircraft Owner State | HI |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 96712 |
| Operator is an individual? | -- |
| Operator Name | |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | |
| Operator City | |
| Operator State | |
| Operator Country | |
| Operator Zip code | |
| Operator Code | |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | HDH |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1915 |
| Departure Time Zone | HST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 10 2001 12:27PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |