Md-11 captain reported ground personnel pulled the chocks without coordination with the cockpit and ...

Attributes
ACN	1601849
Time
Date	201812
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Events
Anomaly	Conflict Ground Conflict Less Severe Deviation - Procedural Published Material / Policy Ground Event / Encounter Other / Unknown

Narrative:

External air needed for start. Had minor display problem on air synoptic requiring discussion with maintenance. Problem fixed and continued with start. Tug was not visible after start; but thought to be attached to aircraft. Completing external air start checklist; felt aircraft moving forward. Immediately stopped aircraft. Asked [ramp] on intercom if tug was pulling aircraft forward. No one on com. Tug was not hooked to aircraft. Someone pulled chocks after external start. I believe normal checklist flow with maintenance due to display problem had the effect of disrupting procedure. Distraction. Abnormal events during air start procedure. Slow down. Insure standard phraseology used.

Original NASA ASRS Text

Title: MD-11 Captain reported ground personnel pulled the chocks without coordination with the cockpit and the aircraft rolled forward before the Captain applied brakes; endangering ground personnel and equipment.

Narrative: External air needed for start. Had minor display problem on air synoptic requiring discussion with Maintenance. Problem fixed and continued with start. Tug was not visible after start; but thought to be attached to aircraft. Completing External Air Start Checklist; felt aircraft moving forward. Immediately stopped aircraft. Asked [Ramp] on intercom if tug was pulling aircraft forward. No one on com. Tug was not hooked to aircraft. Someone pulled chocks after external start. I believe normal checklist flow with Maintenance due to display problem had the effect of disrupting procedure. Distraction. Abnormal events during air start procedure. Slow down. Insure standard phraseology used.

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.

Md-11 captain reported ground personnel pulled the chocks without coordination with the cockpit and the aircraft rolled forward before the captain applied brakes; endangering ground personnel and equipment.