The body that reviews aviation incidents has opened an investigation into what it terms a "serious incident" with one of the planes chartered by Aurigny earlier this month.
On Monday 12th August, a 72-seater ATR operated by Lithuanian airline Jump Air attempted to land in Guernsey in fog before returning to Southampton.
The aircraft was brought in to cover Aurigny's GR651 flight from Southampton to Guernsey due to ongoing technical issues with its own fleet.
After circling Guernsey for around 45 minutes, the flight attempted to land.
The Air Accidents Investigation Branch says the aircraft was just 56 feet off the ground when the captain decided to "go around" - or abort the landing.
This is below the minimum altitude for the conditions, according to the French investigation authority BEA, citing its British counterpart.
The aircraft climbed and returned to Southampton as landing in Guernsey that night was impossible.

New Dean of Guernsey has Alderney connections
Guernsey's youngsters concerned by the high cost of living
A solar eclipse and meteor shower over Guernsey tonight
Average Guernsey home selling for more than £600,000
Guernsey play awarded at National Drama Festival
Rare Guernsey breed to sustainably maintain farm land
Rare seal pup rescued from Guernsey's east coast
Guernsey Coastguard assists in medical evacuation from French fishing vessel