CAAM kenalpasti kerosakan pitot static system punca insiden MH2664. Tahniah kepada pilot kerana mengawal keadaan. Gambar tube pitot disertakan.

kluangman

https://www.nst.com.my/news/nati ... -caused-dive-mh2664

Malfunctioned pitot-static system caused 'dive' of MH2664

By Adrian David - April 10, 2022 @ 5:20pm
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Civil Aviation Authority of Malaysia (CAAM) said that based on initial reports extracted from the Flight Data Recorder (FDR), it was determined that a technical issue occurred during the flight. - NSTP/HAIRUL ANUAR RAHIM
Civil Aviation Authority of Malaysia (CAAM) said that based on initial reports extracted from the Flight Data Recorder (FDR), it was determined that a technical issue occurred during the flight. - NSTP/HAIRUL ANUAR RAHIM
SEPANG: A malfunction to the pitot-static system caused a Malaysia Airlines flight to Tawau, to 'dive' during turbulence, last Sunday.

This was the findings of a review by the Civil Aviation Authority of Malaysia (CAAM) on the initial safety investigation and engineering reports involving Flight MH2664, a Boeing 737-800 aircraft, that departed the Kuala Lumpur International Airport to Sabah on April 3.

CAAM chief executive Captain Datuk Chester Voo Chee Soon in a press statement today said that based on initial reports extracted from the Flight Data Recorder (FDR), it was determined that a technical issue occurred during the flight.


"This was due to a malfunction to the pitot-static system, the instruments that measure pressure differences to determine air speed and altitude.

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"This malfunction produced a false speed indication onboard, resulting in the aircraft to pitch-up and deactivate the autopilot.


"In response to this, the pilot in command's immediate and correct reaction was to regain positive control of the aircraft," said Voo.

He added that this action was crucial to ensure that the aircraft remained under the pilot's control, based on the available accurate indications by using the remaining instruments.

"During this manoeuvre, the safety data showed an abrupt input from the pilot during attempts to regain control.

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"However, these manoeuvres resulted in pitch and altitude changes that correspond with the pilot's report and the passengers' experience on board.

"These corrective manoeuvres were compounded by bad weather which created passenger discomfort in the cabin," said Voo.

He added that the initial actions taken by the flight's crew and the execution of the abnormal recovery checklist, as per standard operating procedure, was sufficient based on CAAM's investigations of the initial reports and input from the FDR.

Moving forward, Voo said that to maintain effective safety oversight, CAAM had instructed Malaysia Airlines Berhad (MAB) to immediately implement several requirements.

"The first was to enhance MAB's 'Upset Prevention and Recovery Training' programme to emphasise the initial reaction and time taken to respond to issues.

"This will be mandated by CAAM to all commercial aircraft operators.

"Another is to issue an enhanced safety memorandum to mandate the need for improved initial action, reaction, and reinforce compliance to the abnormal recovery checklist.

"MAB has to also review analysis from the aircraft manufacturer, the Boeing Company, of the failure and troubleshoot root causes with enhanced corrective actions, to improve an already compliant maintenance programme," he said.

Additionally, Voo added MAB had to review with CAAM on the reliability report to focus on similar faults reported for recorded in-flight issues for the Boeing 737-800 fleet.

"They also have to complete a pitot static inspection that covers all disciplines including probe heating and resistance test on all Malaysia Aviation Group (MAG) B737-800 series aircraft in the fleet," he said.

CAAM also confirmed that the affected aircraft had been grounded until further notice and is currently pending technical analysis from The Boeing Company.

"Root causes identified are actively addressed to ensure enhanced methods of training and safety for all aviation staff involved.

"Follow-up to this, CAAM will issue additional requirements to ensure all areas are carefully addressed as necessary, to ensure adherence to the best safety practices and to always uphold public safety.

"CAAM would like to assure that the safety oversight system in Malaysia regulated by us is stringent and effective in managing risks in accordance with International Civil Aviation Organisation (ICAO) rules and regulations," Voo said.

kelana36

so cerita cerita pasal air pocket semua tu tak boleh pakai lah

mbhcsf

yg kat China tu ade kan air crashed, yg junam tu  ? iras iras sama jenis Boeing yg sama macam MAS ke?

anyways tahniah pilot tu - your brilliance tu  , to remain calm, collected and clear headed in taking control  of the grim situations.

tahniah. Alhamdulillah, sebab Allah bagi ilham untuk buat pilot tu tahu what to do ...yalah depa pun dilatih juga untuk ini tapi when  facing the actual real situation tu yg ..wow...

bijak ni...tulah kan i percaya pilot MH ...semua ni bijak bijak, yg 370 tu memang rare lah and MH17 tu , itu takdir lah ...

Minami2013

kelana36 replied at 11-4-2022 11:13 AM
so cerita cerita pasal air pocket semua tu tak boleh pakai lah

Air pocket boleh jadi dive mcm tu jugak ke efek nya?

kelana36

Minami2013 replied at 11-4-2022 03:54 PM
Air pocket boleh jadi dive mcm tu jugak ke efek nya?

Dive terjadi bila nose of the plane tu berada di bawah dari garisan horizon.

Normal flight during cruise , selalunya the nose of the plane constant at 4-6 deg above the horizon, depending on the speed of the plane. The lower the speed, the higher the nose kena maintain above the horizon.

Kalau kena air pocket, the nose of the plane will maintain sebab the auto pilot will ensure the plane maintain the flight altitude. Kalau pun ada variation in altitude sebab air pocket tu, tak la banyak , just a few feet jer. Macam kita naik kereta , tibab tiba terlambung bila melanggar speed bump without slowing down, rasa terlambung tinggi kan walaupun tak setinggi mana pun.. jadi tak la sampai nose dive..

Dalam kes MH flight ni, speed of the plane unreliable due to the faulty pitot tube. Masa sedang cruising, tiba tiba speed reducing, the nose of the plane kena pitch up to maintain the altitude, bila speed to slow,(approaching stall) auto pilot will be disconnected automatically, the pilot have to lower the nose below the horizon (dive), to avoid stalling and to increase the speed . In the process, mungkin pilot tu handle abrupt sangat sampai penumpang terangkat dari tempat duduk ( negative gravity input) and off course decended to lower altitude.

Decaffeinated

Macam pernah terbaca dulu ada sampai crash sebab benda alah ni kena block dengan tape or something. Ka benda lain?

Lagubestbest

risau ar MAB ni. dulu2 risau sebab asyik report rugi so kalau dah seat pun koyak kita boleh expect maintainance belakang dok ngelat sana sini. Kali ni lepas covid so boleh agak maintainance sekali lagi level yillek.

Minami2013

kelana36 replied at 11-4-2022 12:44 PM
Dive terjadi bila nose of the plane tu berada di bawah dari garisan horizon.

Normal flight durin ...

Tq. Jelas penerangan you. Sbb baca kat komen2 fb semua suspect air pocket sblm ni. So i wonder juga.