Travel F50 near Kerema on Apr 28th 2015, maintained wrong level, loss of separation

Last Update: May 27, 2015 / 16:13:45 GMT/Zulu time

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Incident Facts

Date of incident
Apr 28, 2015

Classification
Incident

Aircraft Registration
P2-TAH

Aircraft Type
Fokker 50

ICAO Type Designator
F50

A Travel Air PNG Fokker 50, registration P2-TAH performing 4P-602 from Port Moresby to Mount Hagen (Papua New Guinea) with 35 passengers and 3 crew, was climbing out of Port Moresby, the captain (70, ATPL, 23,500 hours total, 12,000 hours on type), pilot flying, had handed controls to the first officer and temporarily left the cockpit, when ATC cleared the flight according to filed flight plan to climb to FL180, the first officer (51, CPL, 2,585 hours total, 1,080 hours on type) read correctly back however inadvertently selected 19,000 feet into the master control panel and activated that altitude. When the captain returned to the cockpit, the captain noticed the non-standard altitude selection and assumed ATC had assigned them to the non-standard altitude and therefore did not discuss the altitude with the first officer. During a following hand off the captain advised, they were climbing to FL190, the controller however did not pick up on that error. The aircraft subsequently climbed through 18,000 feet prompting the altitude alerter to sound its chime, both crew confirmed "one thousand to go" and levelled off at FL190 tracking inbound to Kerema waypoint.

An Airlines of PNG (Papua New Guinea) de Havilland Dash 8-100, registration P2-MCT performing a charter flight from Komo to Port Moresby (Papua New Guinea) with 23 passengers and 3 crew, was cleared enroute to FL190 in accordance with their flight plan and was on that flight level about 22nm east of Kerema (Papua New Guinea).

The Dash 8 was tracking outbound from Kerema waypoint on a near reciprocal heading to P2-TAH, when the short term collision alert at the controller's desk and the TCAS systems on board of each aircraft activated. P2-MCT received a resolution advisory to climb, P2-TAH a resolution advisory to descend, both crews complied with the resolution advisory, P2-TAH at the same time initiated a right hand turn, the crew of P2-MCT initiated a turn to the left, the controller while not interfering with possible TCAS resolution instructions instructed both aircraft to turn right. Due to the left turn by P2-MCT the aircraft were turning towards each other, as both followed their climb and descend instructions the conflict was cleared.

P2-MCT had climbed to FL200 while the resolution advisory was active, after being clear of conflict the crew requested and was cleared to return to FL190 and continued to Port Moresby for a safe landing.

P2-TAH, after being clear of conflict, established with ATC that they had been cleared to climb to FL180 only, completed the descent to FL180 and continued to Mount Hagen for a safe landing.

Papua New Guinea's Accident Investigation Commission (AIC) is investigating the occurrence rated a serious incident.
Incident Facts

Date of incident
Apr 28, 2015

Classification
Incident

Aircraft Registration
P2-TAH

Aircraft Type
Fokker 50

ICAO Type Designator
F50

This article is published under license from Avherald.com. © of text by Avherald.com.
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