"The protective device hereinafter called a ""fender"" is intended to serve its purpose during normal aircraft servicing and prevent damage during docking contact rather than aggressive impact. Purpose: This SAE Aerospace Information Report (AIR) discusses damage to aircraft caused by ground equipment contact and suggests methods of protecting against that damage."
SAE AIR1558B-2015 history
2015SAE AIR1558B-2015 Interface Protective Devices - Ground Equipment to Aircraft
2005SAE AIR1558A-2005 Interface Protective Devices - Ground Equipment to Aircraft
1997SAE AIR1558A-1997 Interface Protective Devices - Ground Equipment to Aircraft
1978SAE AIR1558-1978 Interface Protective Devices - Ground Equipment to Aircraft