Runway excursion Incident Boeing 777-312ER 9V-SWQ, 03 Nov 2011
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ASN Wikibase Occurrence # 139628
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Time:12:09 LT
Type:Silhouette image of generic B77W model; specific model in this crash may look slightly different    
Boeing 777-312ER
Owner/operator:Singapore Airlines
Registration: 9V-SWQ
MSN: 34582/716
Fatalities:Fatalities: 0 / Occupants: 158
Other fatalities:0
Aircraft damage: Minor
Location:München-Franz Josef Strauss Airport - MUC/EDDM -   Germany
Phase: Landing
Nature:Passenger - Scheduled
Departure airport:Manchester International Airport - MAN/EGCC
Destination airport:München-Franz Josef Strauss Airport - MUC/EDDM
Investigating agency: BFU Germany
Confidence Rating: Accident investigation report completed and information captured
Singapore Airlines flight SQ327 departed Manchester, U.K. on a flight to Munich, Germany, and Singapore. The co-pilot was initially Pilot Flying (PF) during the flight to Munich.
Based on the latest weather information at Munich, visibility 2,000 m, cloud base 300 ft, the Pilot in Command (PIC) decided to assume the role of PF, and the co-pilot became Pilot Monitoring (PM). The PIC decided to conduct an automatic approach and autoland.
At 11:52 hours local time during descent to Flight Level (FL) 110 the crew contacted Munich approach control for the first time. The crew received several instructions, such as heading and rate of descent, from the controller.
At 11:58 hrs the crew contacted Munich Director and received heading and descent instructions for the final approach to the Instrument Landing System (ILS) of runway 08R.
At 12:00 hrs the crew received the approach clearance to runway 08R "[...] descend 5,000 feet cleared ILS zero eight." Three minutes later the crew was instructed to reduce speed to 170 kt and contact Munich Tower.
At 12:08 hrs the crew received the latest wind information and was cleared to land: “[...] one three zero degrees, seven knots runway zero eight right, cleared to land”.
As the Boeing 777 was about 50 ft above the runway in the flare phase the airplane began to slowly bank left up to 3.5°. The PIC called out: “Okay, flaps twenty.” At approximately 420 m beyond the runway threshold the airplane touched down with the left main landing gear and 132 kt (KIAS). At that time the Auto Flight System (AFS) switched to rollout mode.
The autopilot was still engaged as the airplane moved toward the left runway edge and veered off the runway with a speed of 123 kt (KIAS) about 944 m beyond the threshold in the area of taxiway B4. For about 400 m the airplane rolled through the grass north of runway 08R in a slightly curved right hand turn. The largest lateral deviation from the runway was reached at about 1,242 m beyond the threshold; speed was 109 kt KIAS. Because of the system design the autopilot disengaged due to crew inputs via the rudder pedals. The airplane turned right by about 40°, re-entered the runway close to the intersection with taxiway B6, about 1,566 m beyond the threshold. The aircraft crossed the runway with a heading of about 120°. Speed was still 71 kt KIAS. The airplane veered off the runway again, turned left by about 40°, and came to a stop in the grass south of and parallel to runway 08R. At 12:09:09 hrs the airplane crossed the threshold; at 1209:51 hrs it came to a stop.
According to the pilots there was no need to evacuate the passengers via the slides, because no one had suffered any injuries and the airplane was apparently not damaged. About two minutes after the airplane had come to a stop the fire brigade arrived at the scene. The passengers disembarked the airplane via two stairs from the fire brigade.

The crew stated that during the approach and the landing there were no indications as to malfunctions or system failures. The PIC stated he had tried to initiate a goaround procedure by pushing the TO/GA buttons on the thrust levers and thereby triggering the go-around mode once it had been noticed that the airplane banked to the left. But the airplane did not respond. At the same time he retracted the ground spoilers manually which had automatically been deployed at the time of the touchdown.

Immediate Causes:
- The crew decided to conduct an autoland landing even though the conditions on the ground for a safe conduct were not given.
- Shortly before touch-down the airplane was deviated to the left of its flight direction by a disturbed LOC signal. A BAE 146-RJ85 taking off a short distance ahead of the B 777 caused the interference.
- The two pilots could not keep the airplane on the runway after touch-down because the autopilot was still engaged.
- The crew was confused by the behaviour of the airplane. They had not noticed that the go-around mode had already been deactivated by the initial touchdown of the left main landing gear.

Systemic Causes:
- The recommendation concerning the conduct of autoland landings under CAT I conditions published in the FCOM of the operator allowed the decision for an autoland landing without having to consider the required conditions on the ground.


Accident investigation:
Investigating agency: BFU Germany
Status: Investigation completed
Duration: 7 years 1 month
Download report: Final report



Revision history:

03-Nov-2011 08:43 ryan Added
03-Nov-2011 09:13 harro Updated [Aircraft type, Nature, Source, Narrative]
03-Nov-2011 09:17 RobertMB Updated [Time, Location, Nature, Departure airport, Destination airport, Source, Damage, Narrative]
06-May-2012 01:19 harro Updated [Source]
12-Feb-2017 11:45 Anon. Updated [Narrative, Photo, ]
18-Jan-2018 18:17 Anon. Updated [Damage]
17-Dec-2018 18:11 harro Updated [Source, Narrative, Accident report, ]
23-Dec-2018 15:34 harro Updated [Time, Nature, Narrative]
23-Dec-2018 18:05 harro Updated [Embed code]
24-Dec-2018 12:59 Aerossurance Updated [Source, Embed code]
25-Dec-2018 18:58 Aerossurance Updated [Source, Embed code]

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