Hughes 369D N1102U

Summary

On 9 February 1987 at about 01:30 local time, a Hughes 369D registered N1102U was involved in an accident near Honolulu, Hawaii, United States. 5 people were on board and one died, 2 were seriously injured, 2 had minor injuries. The aircraft was destroyed. No probable cause statement is available for this record.

Date

9 February 1987 at 01:30

Classification

Accident

Location

Honolulu, Hawaii, United States

Nearest airport

Ala Wai Heliport (Z06)

Coordinates

21.2707, -157.8204

Aircraft

Hughes 369D

Registration

N1102U

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Unknown

Phase of flight

Not recorded

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

LAX87FA112

1 person died.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

DRG TKOF CLB, A LOUD NOISE OCCURRED AS 1 OF 5 MAIN ROTORS (MRB'S) & THE TAIL BOOM SEPD FM THE HELICOPTER (HEL). THE HEL THEN CRASHED & HIT A SUBMERGED REEF APRX 200' FM THE HELIPORT. AN EXAM OF THE FAILED MRB SHOWED ITS RETENTION STRAP ASSY(RSA), PN 369D21210-501, FAILED FM FATIGUE IN AN AREA OF CORROSION; 11 OF THE MRB'S 16 STRAP LAMINATES HAD PREEXISTING CRACKS. CORROSION WAS FND ON 78 OF 80 LAMINATES. THE MAINT HNDBK REQD THE RSA'S BE INSPECTED AT 25, 100 & 600 HR INTER- VALS. SVC INFO NOTICE (SIN) DN-77.1 RDMDD A 300 HR INSPN IF ANY CRACK OR LAMINATE FAILURE WAS FND DRG A 100 HR INSPN. AD'S 77-15-09R1 & 81-10-08 REQD INSPN W/I (BUT NOT OUTBRD OF) THE PITCH HOUSING. DRG 100 HR/AD INSPNS AFTER 1768 & 1839 HRS OF OPN, UP TO 3 CRACKS WERE FND IN LAMINATE LEGS, BUT THEIR LCTNS WERE NOT DOCUMENTED FOR LTR INSPN. HOWEVER, DRG 2 SUBSEQUENT 100 HR INSPNS BY ANOTHER MECH, NO CRACKED LAMINATES WERE NOTED. THE HEL HAD 2135 HRS OF OPN WHEN THE ACDNT OCCURRED. SVC INFO LTR DL-54 RCMDD A TRI-FLOW WASH PROC AFTER THE LAST FLT OF EACH DAY WHEN OPNG IN A MARINE ENVIRONMENT

Quoted verbatim from the NTSB record.