# NTSB DCA12WA161: Boeing 737, Karachi, Pakistan, April 22, 2012

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Foreign investigation
- Date: April 22, 2012, 17:35 local (17:35 UTC)
- Place: Karachi, Pakistan
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-flare/touchdown: Landing gear collapse](https://openairdocs.org/ntsb-events/094)
- Highest injury: No injuries
- Injuries: 171 uninjured
- Status: Led by another country's authority
- NTSB office: Major Investigations Division
- Lead agency: Other
- NTSB case key (mKey): 85993
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA12WA161
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/85993/pdf
- Page: https://openairdocs.org/ntsb/DCA12WA161

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Landing-flare/touchdown: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md)

## Factual narrative

On April 22, 2012, at about 12:35 local time, a Shaheen Boeing 737-400, registration number AP-BJN, operating as flight NL122 from Islamabad (ISB) to Karachi (KHI), Pakistan had the left main landing gear collapse upon landing KHI. It is reported that there is minor damage to the airplane resulting from the collapsed gear. The Pakistan Safety and Investigation Board (SIB) is investigating this event. The NTSB has appointed a U.S. Accredited Representative to assist the investigation under the provisions of ICAO Annex 13 as the State of Manufacture and Design of the airplane. For more information you can contact the Pakistan SIB at: Headquarters Pakistan Civil Aviation Authority, Terminal-1, Jinnah International Airport, Karachi-75200, Tel: (92-21) 99072641, (92-21) 99072642, (92-21) 99072646 & (92-21) 99072738 (0900 - 1700 hrs working days), Fax: (92-21) 99242760 & 99242788 (24 hours) or by email: sib@caapakistan.com.pk.

## Aircraft

- Registration: AP-BJN (not matched to a registry record)
- Reported make and model: BOEING 737 (400)
- Category: Airplane
- Damage: Minor damage
- Flight: Non-U.S., commercial
- Operator: Shaheen
- Airworthiness certificate: Standard, Normal

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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