737 Air Niugini atterra corto e finisce in mare a Chuuk (Micronesia)


L'aeroporto di destinazione sembra sia dotato sia di avvicinamenti NDB che di RNAV: entrambe sono procedure non precision, quindi con minime che vanno dai 250feet in su. Per rendere l'idea, un ILS di categoria I ha minime di 200 che partono dai 200feet. Non si sa se le RNAV fossero solo LNav (ovvero solo la guidance laterale è codificata, mentre quella verticale è data da un ipotetico sentiero di discesa calcolato tra la threshold e la quota di inizio del sentiero finale di discesa), oppure Vnav, LPV o A.R. (che consentono una maggiore precisione di navigazione verticale, avendo codificato un anchor point sulla threshold, assimilabile ad un sentiero Glide Slope alike).
Ad ogni modo 250 o più piedi sono abbondantemente sufficienti per eseguire un missed approach senza dover lavare la fusoliera. Certamente le condimeteo potrebbero aver contribuito fortemente, ma anche l'effetto "schiacciamento" che una nuvolosità con ceiling basso induce (un effetto ottico per cui vedi mezza pista dando la sensazione al pilotadi essere alto e dover scendere con maggiore rateo, vedi anche A319 WindJet a PMO). Quest'ultimo ha meno efficacia in un ILS in quanto un continuo scanning degli strumenti (ovvero anche seguire i fligh directors), guiderebbe l'aereo fino alla TDZ.
Credo anche che gli equipaggi di Air Niugini siano abituati a volare in posti con meteo marginale ed avvicinamenti 2D, percui avvezzi a questi scenari.
 
Stessa cosa capitata ad un Lion Air a Denpasar


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https://www.google.it/amp/s/www.cbs...d-plane-crash-pacific-lagoon-short-of-runway/

CANBERRA, Australia*-- A South Pacific airline announced Monday that a passenger died when a plane crashed into a Pacific lagoon in Micronesia last week. Air Niugini had initially said all 47 passengers and crew had survived when a*Boeing 737 crashed near the Chuuk island runway*on Friday.

The Papua New Guinea national carrier said on Saturday one passenger had not been accounted for, but witnesses had reported he had reached a dinghy as*U.S. Navy sailors and local residents rescued people*from the sinking plane.

But Air Niugini chief executive Tahawar Durrani said the man's body was found by divers in the lagoon on Monday. The airline has not identified the man or released his nationality.

"Our outreach team is in touch with the man's family and we are making arrangements to repatriate his body," Durrani said in a statement.

Four passengers were in stable conditions at a Chuuk island hospital and will be taken soon to Guam for further treatment, Air Niugini said.

A Chuuk State Hospital official did not immediately respond to a request for comment on Monday.

Flight PX73 from nearby Pohnpei island crashed into a lagoon about 475 feet from the Chuuk International Airport runway, the airline said.

Air Niugini chairman Kosta Constaninou had said on Sunday that witnesses reported seeing the missing passenger board a dinghy as U.S. divers and local residents rescued the passengers and crew from the sinking plane.

What caused the crash and the exact sequence of events remains unclear. The airline and the U.S. Navy both said the plane landed in the lagoon short of the runway. Some witnesses thought the plane overshot the runway.

A Papua New Guinea accident investigation team flew to Micronesia on Friday, the Post Courier newspaper reported.

An official from Micronesia's Division of Civil Aviation did not immediately respond to a request for comment on Monday.

Flight PX73 flies from Tokyo's Narita International Airport to Papua New Guinea's capital, Port Moresby, via Pohnpei and Chuuk.

Air Niugini has operated since 1973. Data from the Aviation Safety Network indicates 111 people have died in crashes of PNG-registered airlines in the past two decades but none involved Air Niugini.






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