B-787 flight crew reported pushback was initiated without required hazmat documentation.

Attributes
ACN	1761348
Time
Date	202009
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B787 Dreamliner Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 208 Flight Crew Total 9209 Flight Crew Type 488
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Hazardous Material Violation Deviation - Procedural Published Material / Policy

Narrative:

After tsat (target start up approval time) was moved ahead approx 15 minutes; we inadvertently began push-back without final dg (dangerous goods) summary. Immediately recognized error; sent for summary; received final dg summary; and continued push.

Original NASA ASRS Text

Title: B-787 flight crew reported pushback was initiated without required Hazmat documentation.

Narrative: After TSAT (Target Start Up Approval Time) was moved ahead approx 15 minutes; we inadvertently began push-back without Final DG (dangerous goods) Summary. Immediately recognized error; sent for summary; received Final DG Summary; and continued push.

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.