Nigeria, Lagos: precipita aereo passeggeri (thread tecnico)

[wintaco]

E' di qualche minuto fa...

NIGERIA: LAGOS, PRECIPITA AEREO PASSEGGERI =

Lagos, 3 giu. (Adnkronos/Xinhua) - Un aereo passeggeri e'
precipitato oggi in Nigeria, nella regione sud occidentale di Lagos.
Non e' stato precisato il numero dei passeggeri.

[Skip100]

Un MD83 della Dana Air

[wintaco]

NIGERIA: AEREO; AVIAZIONE, PROBABILE NESSUN SOPRAVVISSUTO
ERA DELLA COMPAGNIA DANA PROVENIENTE DA ABUJA
(ANSA-AFP-REUTERS) - LAGOS, 3 GIU - "Non credo ci siano
sopravvissuti". Lo ha detto il direttore dell'aviazione civile
nigeriana, Harold Demuren, in merito all'aereo con 153
passeggeri a bordo che si e' schiantato su un edificio di un
quartiere di Lagos, la capitale commerciale della Nigeria. "Era
un aereo di linea, della compagnia Dana e proveniva da Abuja",
ha detto Demuren. "Non credo ci possano essere sopravvissuti",
ha aggiunto. Subito dopo lo schianto, l'aereo si e' incendiato.
(ANSA-AFP-REUTERS).

[ciccioxx92]

Ecco avherald.
http://avherald.com/h?article=4508fb60&opt=0

R.I.P.

[RaganellaImpazzita]

Sbaglio o un'altro aereo nigeriano è uscito di pista in Ghana....brutta giornata

[MatteF88]

Alcune fonti riportano che l'aereo fosse in fase di atterraggio..

[MatteF88]

Ora anche avherald riporta che l'incidente è avvenuto in finale per pista 18L..

Sbaglio o un'altro aereo nigeriano è uscito di pista in Ghana....brutta giornata

http://www.md80.it/bbforum/viewtopic.ph ... 03#p836203

[albert]

Il report preliminare di ASN: http://aviation-safety.net/database/rec ... 20120603-0

[MatteF88]

Aggiornamento:

so far 16 fatalities on the ground have been confirmed, a number of injured people on the ground have been taken to hospitals..

Offices and counters of Dana Air in Abuja and Lagos need to be protected by armed forces while relatives besieged all Dana premises to get information.

Rescue and Recovery works are hampered by a large crowd gathered at the crash site, the rescue forces complaining the residents have taken over the crash site. The works are difficult by concrete buildings in danger of collapsing as result of impact by the aircraft and the resulting need to take these buildings down first and are further hampered by lack of equipment to move the aircraft debris.

Nigeria's Minister of Aviation said Dana flight 992 was about 11nm before Lagos' Murtala Muhammed Airport when the crew declared emergency. A minute later the aircraft disappeared from radar, subsequently it was learned the aircraft had crashed into residential buildings in the Iju area of Agege (editorial note: north of the aerodrome) with 153 people on board. An investigation has been opened.

C'è da sperare che la folla di curiosi/abitanti del luogo non si porti via, come fossero souvenir, dei rottami o, peggio, gli fdr che potranno fornire risposte riguardo all'accaduto..

[RaganellaImpazzita]

C'è da sperare che la folla di curiosi/abitanti del luogo non si porti via, come fossero souvenir, dei rottami o, peggio, gli fdr che potranno fornire risposte riguardo all'accaduto..

molto probabile, per poi rilasciarli dietro cauzione

[a_ndrea]

Riguardo quanto riportato da ASN nella "Aircraft history" ed una dubbio analogo espresso tra i commenti di AvHerald, mi viene da chiedere, a chi sa come funziona il "mercato dell'usato", se può succedere che vengano venduti aerei "problematici" (con storia di diversi incidenti alle spalle), magari scontati, a paesi con minori risorse finanziarie.
Perché, magari, poi non tutti seguono programmi di manutenzione a regola d'arte (vedasi il caso del PK-688 sul cui final report si stava parlando in questi giorni: sto generalizzando, non mettendo in relazione i due eventi), e l'aereo sfortunato, prima o poi, fa una brutta fine, portandosi appresso troppe vite umane (laddove troppe va inteso come >= 1).

[MatteF88]

Da flightglobal:

Dana Air suspended flights today and reportedly closed an office in Abuja as Nigerian officials begin to investigate the cause of a McDonnell Douglas MD-83 crash in Lagos on 3 June.

Jacky Hathiramani, chief executive of Dana Air, said the airline is "deeply saddened" by the crash that killed 146 passengers on seven crew members aboard the twinjet.

"We are doing everything we can to assist them in this extremely difficult time," Hathiramani says.

Meanwhile, the US National Transportation Safety Board (NTSB) is assisting an investigation already underway by the Nigeria Civil Aviation Authority (NCAA).

The MD-83 was inbound from Abuja to Lagos at 15:43 when it crashed in the crowded Iju Ishaga neighbourhood immediately north of Murtala Muhammed International Airport, the NCAA says.

The aircraft reportedly struck power lines and trees before striking a building.

The incident is already raising questions about the aircraft's safety history

The nearly 22-year-old MD-83 was involved in a minor safety incident in August 2006, when Alaska Airlines operated the twinjet. The NTSB concluded that normal vibration caused a wire bracket to wear away the insulation of a wire bundle, causing an electric arc that blew smoke into the passenger cabin.

After being acquired by then-start-up Dana Air in January 2009, Nigerian reports indicate the same aircraft sustained a bird strike incident in 2010.

[Tiennetti]

Parlare di un aereo problematico mi sembra esagerato... sono due eventi piú che normali nella lunga vita operativa di un aereo

[AirGek]

Su Avherald han aggiunto che un elicottero in zona ha sentito l'equipaggio dichiarare un'avaria ad entrambi i motori.

[JT8D]

Sembra confermato che erano in presenza di una dual engine failure. Secondo AvHerald:

"A Dana Air McDonnell Douglas MD-83, registration 5N-RAM performing flight 9J-992 from Abuja to Lagos (Nigeria) with 147 passengers and 6 crew, was on approach to Lagos about 11nm from LAG VOR when the crew declared emergency reporting both engines had failed and they were going down. At about 15:43L (14:43Z) the aircraft collided with a power line, crashed into a built up area about 5nm short of the threshold of runway 18L near Akande St (not Adebayo Akande St) and 1.2nm south of LAG VOR and burst into flames. A number of residential houses around the crash site were on flames, too, a large smoke plume was visible above the city. All occupants of the aircraft perished in the crash, so far 16 fatalities on the ground have been confirmed, a number of injured people on the ground have been taken to hospitals..

Offices and counters of Dana Air in Abuja and Lagos need to be protected by armed forces while relatives besieged all Dana premises to get information.

Rescue and Recovery works are hampered by a large crowd gathered at the crash site, the rescue forces complaining the residents have taken over the crash site. The works are difficult by concrete buildings in danger of collapsing as result of impact by the aircraft and the resulting need to take these buildings down first and are further hampered by lack of equipment to move the aircraft debris.

Nigeria's Minister of Aviation said Dana flight 992 was about 11nm before Lagos' Murtala Muhammed Airport when the crew declared emergency. A minute later the aircraft disappeared from radar, subsequently it was learned the aircraft had crashed into residential buildings in the Iju area of Agege (editorial note: north of the aerodrome) with 153 people on board. An investigation has been opened.

Listeners on frequency said the crew reported engine trouble.

A professional helicopter pilot on frequency reported the MD-83 crew declared emergency reporting the failure of both engines. According to politiken.dk the Danish pilot and his Danish company providing off-shore services for the Nigerian Oil Industry were subsequently asked by the tower to check the whereabout of the aircraft and were the first to reach the crash site providing the location to Lagos tower.

A Nigerian military official confirmed the crew reported engine trouble. The crash site is situated along the regular approach path the aircraft would have taken into Murtala Muhammed Airport."
(http://avherald.com/h?article=4508fb60&opt=0)

Paolo

[sigmet]

A professional helicopter pilot on frequency reported the MD-83 crew declared emergency reporting the failure of both engines. According to politiken.dk the Danish pilot and his Danish company providing off-shore services for the Nigerian Oil Industry were subsequently asked by the tower to check the whereabout of the aircraft and were the first to reach the crash site providing the location to Lagos tower.

A Nigerian military official confirmed the crew reported engine trouble. The crash site is situated along the regular approach path the aircraft would have taken into Murtala Muhammed Airport."[/i]
(http://avherald.com/h?article=4508fb60&opt=0)

Paolo

Doppia avaria?

[JT8D]

Aggiornamenti di oggi da AvHerald:

"On Jun 4th Dana Air suspended all flight operations until further notice telling on their website "We regret that your Dana Air flight will not operate today, as scheduled".

On Jun 5th the CAA confirmed the crew declared Mayday reporting the failure of both engines. In the afternoon the CAA decided to suspend Dana Air's Air Operator's Certificate (AOC) effectively grounding the airline.

On Jun 5th the airline stated that the aircraft had been in good condition and thus contradicted claims in Nigerian press suggesting the aircraft was not airworthy and was doing its first flight following repairs forced out of repair early by pressure of airline management. The airline explained that the aircraft was flying its regular schedule to Ibadan without any problems on Jun 2nd and on Jun 3rd flew flights 9J-999 Lagos-Abuja, 9J-998 Abuja-Lagos and 9J-993 Lagos-Abuja without any incidents prior to the illfated flight 9J-992.

On Jun 4th 2012 Nigeria's Accident Investigation Bureau NAIB confirmed both flight data and cockpit voice recorders have been recovered and were handed to NAIB officials."
(http://avherald.com/h?article=4508fb60&opt=0)

Paolo

[77W]

Altro aggiornamento di Av Herald su equipaggio e aeromobile:

"Later Jun 5th the airline added the captain had a total flying experience of 18,500 hours, thereof 7,100 hours on the MD-83, the first officer had a flying experience of 1,110 hours total and 800 hours on type. The aircraft had accumulated more than 35,000 cycles and 60,000 flight hours, its last A-check was completed on May 30th 2012 with the next C-check required until September 2012, the aircraft was in possession of a valid certificate of airworthiness following the previous C-check. Both black boxes have been recovered and are in possession of Nigeria's AIB."

[JT8D]

Naturalmente siamo ancora lontani dall'accertamento definitivo delle cause, ci penserà la relativa inchiesta tecnica. Riporto comunque a titolo informativo quanto riportato oggi da AvHerald:

"On Jun 10th 2012 Dana Air's Director of Flight reported on Lagos' TV, that the remains of one or more birds have been found in one of the engines recovered from the crash site. However, the cause of the crash is still to be determined."
(http://www.avherald.com)

Paolo

[sigmet]

"On Jun 10th 2012 Dana Air's Director of Flight reported on Lagos' TV, that the remains of one or more birds have been found in one of the engines recovered from the crash site. However, the cause of the crash is still to be determined."
(http://www.avherald.com)

Paolo

Con quella specie di bolgia Dantesca sul luogo dell'incidente il lavoro deve essere veramente difficile. Dicono che non sia rimasta una goccia di jet A1...

[MatteF88]

C'è un aggiornamento, da avherald

By Simon Hradecky, created Friday, Jul 13th 2012 13:04Z, last updated Friday, Jul 13th 2012 13:17Z
Nigeria's Accident Investigation Bureau (NAIB) have released their preliminary report reporting the aircraft was on its 4th leg of the day on round trips between Lagos and Abuja.

Dana Air's MD-83 5N-RAM was on final approach to Lagos' runway 18R when the crew reported total loss of power.

The cockpit voice recorder, containing 31 minutes of recordings, revealed the crew was in a discussion about a non-normal condition regarding throttle lever position and engine EPR indications, although the crew was not concerned at that point 31 minutes prior to the accident, that the safe continuation of the flight would be affected by this condition. The crew monitored this condition and became increasingly concerned during the descent towards Lagos.

The crew reported descending through 18,100 feet at 15:30L and descending through 7700 feet at 15:40L. Between 15:37L and 15:41L the crew was engaged in configuring the aircraft for landing deploying flaps and landing gear. At 15:41:16 the first officer queried "Both engines coming up?" and the captain replied "negative". The crew subsequently declared emergency at 15:42:10L reporting "dual engine failure ... negative response from throttle." The crew subsequently deployed flaps further while continuing the approach and discussing an alternative landing on runway 18L.

At 15:42:45L the captain reported the runway in sight and instructed the first officer to clean the flaps and retract the landing gear.

At 15:43:27 the captain told the first officer "we just lost everything, we lost an engine. I lost both engines". During the next 25 seconds the crew attempted to relight both engines, the aircraft however crashed about 5.8nm north of the threshold of runway 18R approximately on the extended runway center line.

All 147 passengers and 6 crew on the aircraft and 10 people on the ground were killed in the crash.

The flight data recorder tape was consumed by post crash fire.

The captain (55, ATPL, 18,116 hours total experience, 7,461 hours on type) had been employed with Dana Air since Mar 14th 2012, the first officer (34, CPL, 1,143 hours total, 808 hours on type) had been hired by Dana Air in January 2011.

The left hand engine had accumulated 54,322 hours in 30,933 cycles, the right hand engine accumulated 26,025 hours in 12,466 cycles.

The aircraft had last undergone maintenance on Jun 1st 2012. There were no entries in the technical logs regarding any abnormal condition of the engines.

The aircraft had loaded 8,000 lbs of fuel in Abuja and according to logs had 26,000 lbs of fuel on board thereafter. Analysis of the fuel showed no contamination.

The investigation is on-going.

http://avherald.com/h?article=4508fb60/0001&opt=0

[Tiennetti]

Strano strano....

Due motori che perdono potenza insieme, dopo una mezz'ora dando problemi.... e dicono che non é fuel contamination... mhhhh

[JT8D]

Intanto a breve la compagnia riprenderà le operazioni:

"On Sep 9th 2012 Dana Air announced they would resume operations shortly following the decision by Nigeria's government of Sep 5th to lift the suspension of Dana Air's Air Operator Certificate.

Nigeria's government stated that after thorough review of the airline and its operation the government was satisfied Dana Air's aircraft and operation are airworthy."

(http://avherald.com/h?article=4508fb60/0002&opt=0)

Paolo

[JT8D]

Rilasciato il secondo preliminary report sull'evento:

http://aib.gov.ng/reports/2nd%20INTERIM ... RLINES.pdf

Si sta analizzando anche un secondo evento accaduto dopo quello in questione, come potete leggere.

Da AvHerald: "On Jun 3rd 2014 The Nigerian AIB released their second preliminary statement reporting that the investigation is ongoing, an engine tear down is being conducted with the special focus on the engines' fuel systems.

The AIB reported that while these works were under way another similiar incident happened on another Dana Air MD-83, see Incident: Dana MD83 near Port Harcourt on Oct 6th 2013, engine shut down in flight by itself.

The AIB stated: "Investigative reviews of the engine teardown especially the fuel systems are still ongoing. During this process a similar incident occurred on another MD 83 aircraft of Dana Airlines on the 6th of October, 2013. AIB is currently investigating in-depth systematic and safety issues associated with this second incident vis-à-vis, the crashed sister ship, 5N-RAM. The safety actions adopted by the operator to redress the findings are being monitored and analyzed."

The AIB reported that three interim safety recommendations have been issued and accepted as result of the investigation so far".

(http://avherald.com/h?article=4508fb60/0003&opt=0)

Naturalmente, visto che sembra si sia verificata la perdita di potenza di entrambi i motori contemporaneamente, le attenzioni è normale siano concentrate sul fuel system (o su una fuel contamination, che però era già stata esclusa tempo fa..... ).

Paolo

[JT8D]

Rilasciato il Final Report:

http://aib.gov.ng/files/Dana-Airlines-MD83-5N-RAM.pdf

Riassunto:

http://avherald.com/h?article=4508fb60/0004&opt=0

Paolo

[davymax]

Ok che è si tratta della Nigeria...ma leggendo quanto accaduto sembra che anni di CRM, Safety e tante belle parole simili siano stati buttati nel gabinetto in una manciata di minuti.
Sarebbe bello sapere (ma è facile da immaginare) come fosse l'ambiente delle Flight Operations alla Dana visto che nessuno scriveva nulla sul Techlog, le checklist erano soprammobili e con un motore che non risponde non solo non si fa il QRH ma non si chiama il tecnico che stava a bordo per un consulto e si continua il volo normalmente

Il fatto che la licenza del Comandante non fosse stata validata correttamente e lui abbia avuto dei precedenti con la FAA è il contorno grottesco

[JT8D]

Eh sì... il report si commenta da solo... c'è da piangere a leggerlo. Senza contare, oltre a quanto hai già esposto giustamente tu, l'aspetto manutenzione e come facevano le revisioni ai motori in quel posto dove li mandavano...

Paolo