Narrative:

Before we pushed back for start; the crew attempted to establish contact with multiple ground and apron frequencies and eventually apron west responded. We believed we were cleared to push back and start and did so. Shortly afterwards a 'follow me' wagon arrived and we indeed followed the wagon to the holding point. On arrival at that position ATC then 'accused' us of not having had approval for push back and start. We informed them that we had been given clearance and were then told to contact tower to confirm our departure clearance. This was completed and we eventually taxied. During the taxi out we were then told that we should have contacted clearance delivery for our clearance. We had used the dl (departure clearance services) and received and had our clearance accepted. We were confused by the inference from ATC that we had not operated in accordance with known procedures especially at a time of night when there was minimal traffic. ATIS stated that we should accept our clearance via dl and also there was no information regarding frequencies which were not monitored during the quiet periods.

Google
 

Original NASA ASRS Text

Title: B767 flight crew reported receiving data link clearance and started pushback and was told they needed to confirm clearance with Delivery.

Narrative: Before we pushed back for start; the crew attempted to establish contact with multiple ground and apron frequencies and eventually Apron West responded. We believed we were cleared to push back and start and did so. Shortly afterwards a 'follow me' wagon arrived and we indeed followed the wagon to the holding point. On arrival at that position ATC then 'accused' us of not having had approval for push back and start. We informed them that we had been given clearance and were then told to contact Tower to confirm our departure clearance. This was completed and we eventually taxied. During the taxi out we were then told that we should have contacted Clearance Delivery for our clearance. We had used the DL (Departure Clearance Services) and received and had our clearance accepted. We were confused by the inference from ATC that we had not operated in accordance with known procedures especially at a time of night when there was minimal traffic. ATIS stated that we should accept our clearance via DL and also there was no information regarding frequencies which were not monitored during the quiet periods.

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.