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ASN Wikibase Occurrence # 209596
 
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Date:20-APR-2018
Time:09:35 LT
Type:Silhouette image of generic B429 model; specific model in this crash may look slightly different    
Bell 429 GlobalRanger
Owner/operator:White Sky Aviation
Registration: PK-WSX
MSN: 57186
Fatalities:Fatalities: 0 / Occupants: 8
Other fatalities:1
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Morowali, Kendari, Sulawesi -   Indonesia
Phase: Approach
Nature:Passenger - Non-Scheduled/charter/Air Taxi
Departure airport:Morowali Industrial Park.
Destination airport:Kendari Airport
Investigating agency: NTSC Indonesia
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The helicopter crashed as it tried to return to the helipad. There were no fatalities of serious injuries to those on board. One person on the ground died after being struck by rotor debris. Operated under contract to IMIP - PT Indonesia Morowali Industrial Park.

At about one minute after take-off, at altitude approximately 600 feet, the pilot noticed one of the Engine Control Unit (ECU) failed. The pilot and the engineer discussed to determine which ECU had failed. The pilot decided to return to the helipad. The pilot selected one of the throttles to manual and afterward the altitude and the speed decreased. The pilot attempted to recover by manipulating the collective, throttle and cyclic, however the altitude and speed could not be recovered.
The operator utilized a quick reference handbook (QRH) that was derived from the manufacture manual but a "significant part was missing from the QRH" according to accident investigators.

Contributing Factors
"The lack of experience related to the handling of EEC failure and QRH reading might led to the failure of the pilot to identify the failure of the EEC, resulted in the main rotor (NR) RPM to drop below 95% which could not withstand the helicopter in the air."

Sources:

http://web.archive.org/web/20180420090744/https://elshinta.com/news/143475/2018/04/20/kecelakaan-pesawat-rotary-wing-di-kendari
http://rri.co.id/post/berita/517300/nasional/pesawat_operator_whitesky_jatuh_di_kawasan_pertambangan_kendari.html
http://www.en.netralnews.com/news/currentnews/read/20440/helicopter.owned.by.pt.imip.falls.in.morowali
https://tech2.org/indonesia/helicopter-owned-by-pt-imip-falls-in-morowali-a-murdered-employee/
http://knkt.dephub.go.id/knkt/ntsc_aviation/baru/pre/2018/2018%20-%20010%20-%20PK-WSX%20Preliminary%20Report.pdf
___________________
https://www.helis.com/database/cn/43517/

Accident investigation:
cover
  
Investigating agency: NTSC Indonesia
Status: Investigation completed
Duration: 3 years and 8 months
Download report: Final report

Media:


Revision history:

Date/timeContributorUpdates
20-Apr-2018 06:51 gerard57 Added
20-Apr-2018 07:00 gerard57 Updated [Destination airport, Source, Narrative]
20-Apr-2018 07:04 gerard57 Updated [Time, Operator, Other fatalities, Location, Source, Narrative]
20-Apr-2018 08:30 Iceman 29 Updated [Embed code]
20-Apr-2018 08:35 Iceman 29 Updated [Time, Aircraft type, Cn, Source, Embed code, Narrative]
20-Apr-2018 08:39 Iceman 29 Updated [Operator]
20-Apr-2018 09:18 Dmitry Updated [Aircraft type, Source, Embed code]
20-Apr-2018 09:19 harro Updated [Aircraft type, Cn]
20-Apr-2018 13:37 Iceman 29 Updated [Operator, Source]
20-Apr-2018 18:44 Aerossurance Updated [Time, Operator, Phase, Nature, Departure airport, Source, Narrative]
06-Aug-2018 12:47 Aerossurance Updated [Source, Narrative]

Corrections or additions? ... Edit this accident description

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