Narrative:

During my short 250 hours on this aircraft I have experienced 5 abnormal landing events. During [the most recent] event; after normal touchdown spoiler deployment occurs. Shortly after spoiler deployment occurs; the spoilers retract; the autobrakes disengage and the throttles advance. If the throttles are above idle; the thrust reversers lock. This event has occured at both flaps 30 and 40; with and without crosswind and with sink rate between 150FPM and 400FPM (estimated). The event has been countered with manual spoiler extension; manual braking and physically holding the throttles at idle with the forarm while deploying thrust reversers. The event causes increased landing rollout and stopping distance.recommend searching foqa data for similar incidents to determine cause of above event and take action necessary to prevent future occurrence.

Google
 

Original NASA ASRS Text

Title: A B737-800 Captain reported after landing the TOGA system engaged before reverse thrust was activated. Thrust levers were physically held at idle while the speedbrake and reversers were engaged.

Narrative: During my short 250 hours on this aircraft I have experienced 5 abnormal landing events. During [the most recent] event; after normal touchdown spoiler deployment occurs. Shortly after spoiler deployment occurs; the spoilers retract; the autobrakes disengage and the throttles advance. If the throttles are above idle; the thrust reversers lock. This event has occured at both flaps 30 and 40; with and without crosswind and with sink rate between 150FPM and 400FPM (estimated). The event has been countered with manual spoiler extension; manual braking and physically holding the throttles at idle with the forarm while deploying thrust reversers. The event causes increased landing rollout and stopping distance.Recommend searching FOQA data for similar incidents to determine cause of above event and take action necessary to prevent future occurrence.

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.