Date:	Wednesday 2 June 2021
Time:	23:06 UTC
Type:	Boeing 787-9 Dreamliner
Owner/operator:	Gulf Air
Registration:	A9C-FF
MSN:	39985/803
Year of manufacture:	2019
Fatalities:	Fatalities: 0 / Occupants: 13
Other fatalities:	0
Aircraft damage:	None
Category:	Serious incident
Location:	near waypoint KALMI -   Pakistan
Phase:	En route
Nature:	Unknown
Departure airport:	Bahrain International Airport (BAH/OBBI)
Destination airport:	Islamabad International Airport (ISB/OPRN)
Investigating agency:	BASI Pakistan
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
Gulf Air flight GF770, a Boeing 787-9 Dreamliner, was descending toward Islamabad International Airport when it deviated left of track due to severe weather.
When GF770 was 15 nm North-West of KALMI, it was given instructions to descend to 5,000 feet on pilot’s request due to weather. As GF770 was descending through 5,300 ft, the pilot reported climbing to 7,000 ft and subsequently to 10,000 ft due to a Ground Proximity Warning System (GPWS) warning just short of position KALMI. GF770 subsequently landed at ISB after remaining in hold for 1 hour 50 minutes for weather improvement.

Cause
1. Aircraft descended below AMA which resulted in activation of GPWS warning {Controlled flight into or toward terrain (CFIT)} due to Non-adherence of SOPs and lack of Situational Awareness.

Contributory Factors
1. Non availability of dedicated Team Leader during the time of incident.
2. Unmanned position of Cherat Approach South during the time of incident.
3. Non activation of MSAW feature within the SI-ATM system at IIAP, Islamabad.
4. Lack of communication between the ATC units (Area Control Islamabad - Cherat Approach North / Peshawar and Approach Control Islamabad).
5. Selection of incorrect display of MSA charts / Grid MORA by flight crew.
6. Non-standard selection of weather and terrain on MFDs by flight crew.
7. Inadequate weather avoidance technique by flight crew.

022255Z 09011KT 5000 -TSRA FEW030CB SCT040 BKN100 24/20 Q1006 TEMPO 09020G30KT 3000 TSRA=
022325Z 09047KT 0300 R28L/0400 RMID0800 R10R/400 +TSRA FEW030CB SCT040 OVC100 19/19 Q1009 TEMPO 09020G50KT 0050 +TSRA=
022355Z 18028KT 1000 R28L/2000 RMID/2000 RlOR/2000 TSRA FEW030CB SCT040 OVC100 17 /16 Q1009 TEMPO 09020G30KT 2000 TSRA=
030025Z 13018KT 4000 -TSRA FEW030CB SCT040 OVC100 18/17 Q1008 TEMPO 09020G50KT 0500 +TSRA=

BASI Pakistan

Date/time	Contributor	Updates
19-Sep-2025 18:24	ASN	Added
19-Sep-2025 18:27	ASN	Updated [Location, Category, ]
19-Sep-2025 18:29	Justanormalperson	Updated [Date, ]