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Adam Air Flight 172

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Adam Air Flight 172
Adam Air crash.jpg
Adam Air Flight 172 after impact on the runway.
Date21 February 2007
SummaryStructural failure upon landing; pilot error
SiteJuanda International Airport
Aircraft typeBoeing 737-33A
OperatorAdam Air
Flight originSoekarno–Hatta International Airport, Jakarta, Java
DestinationJuanda International Airport, Surabaya, East Java
Survivors149 (all)

Adam Air Flight 172 refers to an accident suffered by a Boeing 737-300, when it landed in Surabaya at the end of a scheduled domestic passenger flight from Soekarno–Hatta International Airport to Juanda Airport.[1] On 21 February 2007, the plane bent on landing, with the fuselage cracking in the middle of the passenger section. All six of Adam Air's remaining 737s were immediately grounded, and five of them were back in regular service later that year. This incident caused further concerns regarding the safety of flights operated by Adam Air, which had received much criticism after the 1 January 2007 crash of Flight 574.


The aircraft, a Boeing 737-33A, registration PK-KKV, was acquired by Adam Air in January 2007, having previously been operated by Brazilian operator Varig. The aircraft was manufactured in 1994.[2]


The plane bent upon landing at Juanda International Airport, with the fuselage breaking in the middle of the passenger section. The landing was particularly hard, with baggage being ejected from cabin lockers into the cabin space.[3] The tail section of the plane was bent down compared to the rest of the plane.[4] Subsequent flights to the airport were diverted to alternate airports.[5] Adam Air's fleet of Boeing 737-300s were grounded for safety inspections in the interim.[3] Immediately after the accident, Adam Air repainted the aircraft, covering the original orange livery with a plain white exterior. This is legally permissible, so long as no evidence is destroyed.[6] Also in the immediate aftermath, a large number of passengers cancelled their flights with Adam Air,[7] saying they had "lost faith" in the airline. They were all refunded in full.[8]

Grounding of Adam Air's 737s[edit]

Another view of the jet.
Another view of Adam Air flight 172.

As a result of the incident, all six remaining Adam Air 737s were immediately grounded awaiting safety checks. Vice-President of Indonesia, Jusuf Kalla, said that all Boeing 737-300s should be checked.[3] He eventually decided the entire Indonesian fleet of 737s should be checked, but did not ground any more aircraft.[9] There were also suggestions that Adam Air should be suspended from all operations until the entire fleet could be checked, with MP Abdul Hakim saying "It will be good for the company and the government ... until the flight authorities can determine if Adam Air is still worthy as national aircraft company".[10]

The Indonesian Transport Ministry said that if the aircraft showed signs of problems, the checks would be expanded to cover all 737s operating in Indonesia.[4] On 5 March, it was reported that five of the six aircraft had returned to normal operations, but the sixth was still undergoing a full maintenance overhaul at maintenance, repair and overhaul firm, GMF AeroAsia facility.[11] Adam Air had resumed its normal schedule by 9 March 2007.[citation needed]


The accident was investigated by the National Transportation Safety Committee (NTSC).[12] Investigators compiled data from the Indonesian weather agency and from the air traffic control center in Surabaya in an attempt to determine the cause.[1] Officials state the aircraft did pass safety checks prior to its departure.[1][clarification needed] Boeing announced that they would also provide technical assistance to both the authorities and the airline during the course of the investigation.[4]

The final report from the NTSC stated that the probable cause of the accident was an excessive sink rate upon touchdown, following an unstabilised approach.[13] In the report, the INTSC noted that the approach was unstable below 200 feet (60 m), with a vertical speed occasionally greater than 2500 ft/min (13 m/s). The vertical acceleration on landing was measured at 5 g. Additionally, the aircraft initially touched down with the right main gear approximately 4 metres (13 ft) outside of the runway edge.

The investigation further revealed that there was no technical malfunction on the aircraft prior to touchdown.

The flight crew was criticised for not maintaining a sterile cockpit during the landing, with excessive non-flight related discussion going on throughout the flight.[14]

Unusually for an aircraft accident investigation, the investigative committee was not provided information as to the identities of the aircraft flight crew.

Maintenance concerns[edit]

The safety record of Adam Air was heavily criticised, especially in the aftermath of Flight 574.[15] Pilots reported repeated and deliberate breaches of international safety regulations, with aircraft being flown in non-airworthy states for months at a time. They claimed that there had been such incidents as requests to sign documents to allow an aircraft to fly while not having the authority to and while knowing the plane to be not airworthy, flying a plane for several months with a damaged door handle, swapping parts between aircraft to avoid mandatory replacement deadlines, being ordered to fly aircraft after exceeding the take-off limit of five times per pilot per day, flying an aircraft with a damaged window, using spare parts from other aircraft to keep planes in the air, and the ignoring of pilots' requests not to take off due to unsafe aircraft. The Associated Press quoted one pilot as saying that "Every time you flew, you had to fight with the ground staff and the management about all the regulations you had to violate." They also claim that if pilots confronted their seniors in the airline, they were grounded or docked pay.[15][16]


The Indonesian government announced plans immediately after the accident to ban jets over ten years of age for any commercial purpose.[17][clarification needed] The age limit had been 35 years or 70,000 landings.[18] Indonesia also announced plans to reshuffle the Transportation Ministry in response to this incident, Flight 574 and the loss of the ferries MV Senopati Nusantara and MV Levina 1. Among those to be replaced were the directors of air and sea transports and the chairman of the National Committee for Transportation Safety.[19] Indonesia also intended to introduce a new system of ranking airlines according to their safety record, with a level one ranking meaning the airline has no serious issues, a level two ranking meaning the airline must fix problems, and a level three rating forcing the airline to be shut down.[4]

See also[edit]


  1. ^ a b c "Indonesia Grounds Airplanes After Latest Air Mishap". MensNewsDaily. MND. 22 February 2007. Archived from the original on 30 September 2007.
  2. ^ Adam Air PK-KKV (Airfleets). Retrieved 14 February 2007.
  3. ^ a b c "Indonesia 'Grounds' Adam Air Jets". Al Jazeera, 22 February 2007. Retrieved 18 October 2009.
  4. ^ a b c d "Indonesia may expand inspection of Boeing jets – Accident prompts scrutiny of 737-300s". Seattle Post-Intelligencer, 24 February 2007. Retrieved 1 March 2007.
  5. ^ "Checks urged after passenger jet cracks on landing" (on, 24 February 2007. Retrieved 25 February 2007.
  6. ^ "Adam Air paints its ill-fated plane"[permanent dead link]. The Jakarta Post. Retrieved 28 February 2007.[dead link]
  7. ^ "Airline grounded after plane cracks". The Sydney Morning Herald, 23 February 2007. Retrieved 1 March 2007.
  8. ^ "Adam Air passengers ask for money back"[permanent dead link][permanent dead link]. The Jakarta Post. Retrieved 1 March 2007.[dead link]
  9. ^ "Mystery crash sparked air safety fears". MSN. Retrieved 1 March 2007. Archived 18 February 2012 at the Wayback Machine
  10. ^ "Indonesia Grounds Adam Air's B737s After Buckling Incident" Archived 2 October 2010 at the Wayback Machine. Aircraft Maintenance Technology (AMT), 8 July 2008. Retrieved 18 October 2009.
  11. ^ "Indonesia's aviation safety agency to publish preliminary report into New Year's Day Adam Air crash despite failure to locate black boxes". Flightglobal, 5 March 2007. Retrieved 5 March 2007.
  12. ^ "Indonesia's DGAC grounds Adam Air 737-300 fleet after latest accident".Flight International, 22 February 2007. Retrieved 28 February 2007.
  13. ^ "Report: Adam B733 at Surabaya on Feb 21st 2007, hard landing off runway". The Aviation Herald. Retrieved 20 May 2012.
  14. ^ "Aircraft Accident Investigation Report – PT. Adam SkyConnection Airline (Adam Air) Boeing 737-300 ; PK–KKV Juanda Airport, Surabaya, East Java Republic of Indonesia" (PDF). National Transportation Safety Committee, Ministry Of Transportation, Republic Of Indonesia. Archived from the original (PDF) on 5 February 2015. Retrieved 20 May 2012.
  15. ^ a b "Falling skies for Indonesian aviation". Asia Times Online, 24 January 2007. Retrieved 27 January 2007.
  16. ^ "Indonesia: Industry dogged by safety concerns, pilot shortage" Archived 22 March 2012 at the Wayback Machine. Asia One, 1 December 2007. Retrieved 18 October 2009.
  17. ^ "Plane ban after 'crack' landing". The Age, 28 February 2007. Retrieved 28 February 2007.
  18. ^ "Indonesia eyes ageing planes". Television New Zealand. 28 February 2007. Archived from the original on 15 May 2011. Retrieved 15 September 2011.
  19. ^ "Indonesia plans to reshuffle transportation ministry after accident: paper". People's Daily, 27 February 2007. Retrieved 1 March 2007.

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