Emb-190 captain reported his seat slid aft on the takeoff roll.

Attributes
ACN	1545986
Time
Date	201805
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	EMB ERJ 190/195 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Pilot Seat
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Captain seat slid backward on takeoff roll passing 100 knots. Immediate change of aircraft control and continued take off. First officer (first officer) remained PF (pilot flying).in flight; tests made apparent that seat would hold position most of the time; but would occasionally slide. Held for landing. Maintenance on ground tested and confirmed that.seat became loose. Arrest mechanism issue.

Original NASA ASRS Text

Title: EMB-190 Captain reported his seat slid aft on the takeoff roll.

Narrative: Captain seat slid backward on takeoff roll passing 100 knots. Immediate change of aircraft control and continued take off. FO (First Officer) remained PF (pilot flying).In flight; tests made apparent that seat would hold position most of the time; but would occasionally slide. Held for landing. Maintenance on ground tested and confirmed that.Seat became loose. Arrest mechanism issue.

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.