WPR19LA041

NTSB accident investigation · Hawker Hawker Hntr FMK 58 · Honolulu, HI · December 13, 2018

Accident · Serious injuriesClass 3 · LimitedFinal report
Date
December 12, 2018, 14:30 local (Dec 13, 2018, 00:30 UTC)
Place
Honolulu, HI
Injuries
1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N323AXHawker Hawker Hntr FMK 58
Defining event
Enroute-climb to cruise: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20181212023519A
Case key
98765

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

A total loss of engine power for undetermined reasons.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Not determinedNot determined › Not determined · Unknown/Not determinedHawker Aircraft Factory HAWKER HNTR FMK 58: 1 caseAll aircraft: 2,247 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that he experienced a loss of engine power at or below 500 ft above ground level during departure turnout from the runway. The pilot attempted to restart the engine, but the airspeed continued to decay, and he ejected. The airplane then impacted the water and became submerged in the ocean about 2.86 nautical miles southeast from the departure end of the runway in an area with a water depth of about 250 ft. Postaccident examination of the recovered wreckage revealed that all recovered components were fully functional at the time of the accident. Because the rest of the wreckage was not recovered and could not be examined, the reason for the loss of engine power could not be determined.

Factual narrative

On December 12, 2018, about 1430 Hawaii-Aleutian standard time, a Hawker Hunter MK-58, N323AX, was destroyed when it was involved in an accident near Honolulu, Hawaii. The pilot was seriously injured. The airplane was operated as a Title 49 United States Code Sections 40102 and 40125 non-military public aircraft. The pilot reported that the airplane taxi and runup on the runway were normal. After takeoff, he experienced a loss of engine power at or below 500 ft above ground level during the departure turnout from runway 08R at Daniel K Inouye International Airport (HNL), Honolulu, Hawaii. He attempted to restart the engine, but the airspeed continued to decay, so he decided to eject. Before ejecting, the pilot maneuvered the airplane and waited until he was clear of a parasailing boat before assuming an optimal body position and pulling the ejection handle. After he ejected from the airplane, the pilot reported that he swung once in the parachute before water entry. The airplane impacted the water and became submerged in the ocean about 2.86 nautical miles southeast from the departure end of runway 08R in an area with a water depth of about 250 ft. Witnesses reported two external fuel tanks floating on the ocean surface shortly after impact but reported that the remainder of the airplane was intact and sunk. Wreckage recovery personnel recovered portions of the instrument panel, fuselage, and engine sections; the throttle quadrant, low pressure cock, exhaust gas temperature gauge, rpm gauge, temporary traffic control switch, temporary traffic control box, and G3X secure digital card were not recovered. Postaccident examination revealed that the recovered instrument panel gauges exhibited extensive damage due to the impact; the airspeed gauge indicated 179 knots. The engine's compressor blades showed signs of damage from the engine casing being pushed inward, consistent with water impact. The degree of blade impact deflection observed and lack of “corn cobbing” indicated that the blades were turning upon impact but not likely at full power. The engine was rotated by hand and showed no indications of seizure. The throttle linkage to the fuel control unit moved smoothly, indicating no signs of failure. The fuel line gaskets were in good condition and the line was fully functional. The bleed air valve opened and closed when moved by hand. The fuel filter was clean. The high-pressure fuel pumps turned when rotated by hand. All recovered components that were inspected or tested and that could reasonably have resulted in a loss of engine power were assessed to be fully functional at the time of the accident.

Aircraft

Registration
N323AX
Reported as
Hawker Hawker Hntr FMK 58 (MARK 58A)
Category
Airplane
Serial number
41H-679995
Built
1958
Airframe hours
4,784.9
Engine
Avon 203/7, 10,150 lbs thrust, turbo jet
Damage
Destroyed
Flight
Public aircraft · Public use
Operator
Airborne Tactical Advangate Company
Registered owner
Hunter Aviation International Inc
Airworthiness certificate
Special, Experimental (Special)
Last inspection
AAIP · February 20, 2018
Departed
HNL · Honolulu, HI
Destination
HNL · Honolulu, HI
Flight plan
IFR
Airport
HNL · Daniel K Inouye Intl, runway 08R, 12,000 × 200 ft, asphalt
Equipment
Electronic primary flight display, Electronic flight bag or handheld device, Data recorder, Airframe parachute, Electronic multifunction display

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
47
Injuries
Serious
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 1, Without waivers/limitations
Last flight review
May 29, 2018
Seat
Single
Restraint
5-point
Flight hours
4,417 total · 1,239 in this make and model · 4,377 as pilot in command · 59 in the last 90 days · 17 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 15 knots, gusting 19
Visibility
10 statute miles
Lowest ceiling
5,000 ft broken
Temperature
79 °F, dew point 66 °F
Altimeter
30.14 inHg
Observed at
PHNL, 5 nm away

Docket · 3

The files NTSB released with the investigation on January 12, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.7 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.