A B-777 aircrew were flying an unstabilized approach when the jumpseater commanded a go-around. The ...

Narrative:

On approach ILS xxr; captain was flying the approach. While on autopilot; captain was attempting to acquire the glide slope from above. Captain had been briefed--twice--by the first officer (first officer) on using the vsi to descend between 1000-1500fpm. Captain elected to configure and use speed brakes. Captain called for flaps 25/30 with speed brakes extended. First officer called for speed brakes to be retracted first. Upon speed brake retraction; aircraft pitched up. Aircraft then began a climbing left turn on the autopilot. Captain became confused as to why the aircraft was climbing and turning and attempted to override the controls. Relief officer (fb) called 'go around'. Captain was slow to initiate go around procedures. Aircraft got 10+knots slow and slowing while trying to follow the flight director command bars. First officer directed captain to lower the nose as we were getting excessively slow (while in the climb). Captain accelerated and called for flaps up (from flap position 20/25) and fb called for gear up. Aircraft climbed to 3400+ft (cleared altitude was 3000ft) and accelerated to 270+knots.captain later admitted his finger had hit the to/GA button causing the aircraft to go around on autopilot. I now am unsure if we oversped the flaps; because maintaining aircraft control was priority. I do not know if the captain put a writeup for possible flap overspeed into the maintenance log. Second approach and landing were uneventful.

Original NASA ASRS Text

Title: A B-777 aircrew were flying an unstabilized approach when the jumpseater commanded a go-around. The Captain was confused and slow to respond and may have inadvertently hit the TO/GA button; causing the aircraft to climb through the 3000 foot level off altitude.

Narrative: On approach ILS XXR; Captain was flying the approach. While on autopilot; Captain was attempting to acquire the glide slope from above. Captain had been briefed--twice--by the First Officer (FO) on using the VSI to descend between 1000-1500fpm. Captain elected to configure and use speed brakes. Captain called for Flaps 25/30 with speed brakes extended. FO called for speed brakes to be retracted first. Upon speed brake retraction; aircraft pitched up. Aircraft then began a climbing left turn on the autopilot. Captain became confused as to why the aircraft was climbing and turning and attempted to override the controls. Relief Officer (FB) called 'Go Around'. Captain was slow to initiate go around procedures. Aircraft got 10+knots SLOW and SLOWING while trying to follow the Flight Director Command bars. FO directed Captain to lower the nose as we were getting excessively slow (while in the climb). Captain accelerated and called for Flaps up (from flap position 20/25) and FB called for gear up. Aircraft climbed to 3400+ft (cleared altitude was 3000ft) and accelerated to 270+knots.Captain later admitted his finger had hit the TO/GA button causing the aircraft to go around on autopilot. I now am unsure if we oversped the flaps; because maintaining aircraft control was priority. I do not know if the Captain put a writeup for possible flap overspeed into the maintenance log. Second approach and landing were uneventful.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1259842
Time
Date	201505
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	Marginal
Aircraft 1
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Excursion From Assigned Altitude Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types Inflight Event / Encounter Unstabilized Approach

A B-777 aircrew were flying an unstabilized approach when the jumpseater commanded a go-around. The captain was confused and slow to respond and may have inadvertently hit the to/GA button; causing the aircraft to climb through the 3000 foot level off altitude.