Originally Posted by
Airbubba
In fact, I believe most large U.S. airlines have a procedure in the operations manual allowing operation of the aircraft without the proper uniform. You don't want a plane parked because someone's suitcase is stolen overseas. You are supposed to get an authorization message from the ops department. Or, so they tell me. 
I've certainly left my uniform in the closet of an international hotel on a trip that alternated operating legs and deadheads in civilian clothes.
There are similar procedures for operating with faxed or emailed copies of licenses and medicals if the originals are lost or stolen downline although this may only apply to domestic operations.
A United pilot showed up for a flight in civvies a couple of years ago:
https://www.reuters.com/article/us-a...-idUSKBN15R0RC
In FAA land we can no longer use a Photocopy/EMail from Crew Records etc. A temporary certificate has to be requested on
https://www.faa.gov/licenses_certifi...rmen_services/
This is a recent change and may not be as well known as some.
#PSA