Boeing 400 incident near Islamabad, Pakistan, Pk, April 21, 2015
On April 21, 2015 at about 5:37 am local time, a Boeing 400, registered APBJT, was involved in an incident during initial climb near Islamabad, Pakistan. The NTSB record does not give the injuries.
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this incident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 21, 2015 · about 5:37 am local time
- Place
- Islamabad, Pakistan, Pakistan
- Type
- Incident
- Injuries
- The NTSB record does not give the injuries.
- Weather
- not recorded
- Aircraft
- Boeing 400
- Registration
- APBJT · no longer on the register · serial 25740
- Damage
- Not recorded
- Flight
- Flight
The NTSB's narrative preliminary · quoted from the NTSB record
On April 21, 2015, a Shaheen Air International (SAI) Boeing 737-400, powered by CFMI CFM56-3C1 turbofan engines, experienced a No. 1 (left engine) failure while climbing through 3,200 feet. The flight crew heard a loud band and high exhaust gas temperature was observed for the No. 1 engine. The engine was shutdown and the airplane was turned back for a successful single engine landing at the Islamabad International Airport (OPRN). The investigation is being conducted by the Pakistan Civil Aviation Authority (PCAA). The NTSB is participating as the US Accredited Representative as the state of manufacturer for the engines. The PCAA can be contacted at psib@caapakistan.com.pk or by phone at (92) 21 9924 2772.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Loss of engine power (partial) during initial climb defining event
The aircraft
- Landing gear: fixed
- Engine: Cfm CFM56-3C1 (turbofan); 0 hours total
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Other NTSB records under APBJT the same tail number, which may have belonged to a different aircraft at the time
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.