ASN Wikibase Occurrence # 43288
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| Date: | Wednesday 29 April 1987 |
| Time: | 10:39 |
| Type: |  Hughes 369D |
| Owner/operator: | Adriatic Sea |
| Registration: | N10995 |
| MSN: | 721D |
| Total airframe hrs: | 5307 hours |
| Engine model: | ALLISON 250-C20B |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Tamuning -
 Guam
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Tamuning |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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. CAUSE:
Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X30734
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 06-Jun-2022 09:45 | Ron Averes | Updated [Location, Departure airport] |
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