- Date
- April 29, 1987, 10:39 local (18:39 UTC)
- Place
- Tamunings
- Injuries
- 2 fatal
- Damage
- Destroyed
- Phase of flight
- Maneuvering
- Aircraft
- N10995Hughes 369D
- Weather
- Visual (VMC) · Day
- Status
- Completed · report May 26, 1989
- Report
- Approved by Office Director
- FAA report
- 19870429050399A
- Case key
- 25584
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
A Hughes 369D, operated off of a fishing vessel, went out of control and crashed in the pacific ocean, nr guam. The accident was witnessed by the ship's captain. His statement indicated one of the main rotor blades separated in flt while the helo was orbiting the ship at aprx 200 ft MSL. During an earlier flt a vibration associated with the main rotor system was experienced. The discrepancy was referred to the A&P mechanic on the boat, who worked on the helo for about one hour with the plt. The helo was then test flown. The main rotor blades of the Hughes 369D are attached to the main rotor hub with stainless steel retention straps. The manufacturer outlines a procedure designed to help prevent main rotor hub component corrosion on helicopters operated in marine environments. Records maintained at the helo maintenance based revealed that sufficient supplies were not available to accomplish the procedure on board the ship. The acft was not recovered.
Aircraft
- Registration
- N10995
- Reported as
- Hughes 369D
- Category
- Helicopter
- Serial number
- 721D
- Airframe hours
- 5,307
- Engine
- Allison 250-C20B, 375 horsepower, turbo shaft
- Damage
- Destroyed
- Flight
- Business · Part 91
- Operator
- Adriatic Sea, doing business as Fishing Vessel
- Registered owner
- Apollo Enterprises Co.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · April 10, 1987 · 55 hours before
- Departed
- Tamunings, OF
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
- 44
- Certificate
- Foreign
- Medical
- Unknown, Unknown
- Seat
- Left
- Toxicology
- Performed
Weather
- Conditions
- Visual (VMC) · Day
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.