For those who missed it:
Pittsburgh pilot fired over gun incident on US Airways flight
http://www.post-gazette.com/pg/08109/874569-100.stm What got him fired was a flying rules violation: not supposed to be doing anything to distract from flying the plane under 10,000 ft. He was handling the weapon at 8,000 ft during the approach for landing. He could have been fired for doing that even w/o the ND.
AKA as the sterile cockpit rule:
U.S. FAR 121.542/135.100, "Flight Crewmember Duties":
(a) No certificate holder shall require, nor may any flight crewmember perform, any duties during a critical phase of flight except those duties required for the safe operation of the aircraft. Duties such as company required calls made for such nonsafety related purposes as ordering galley supplies and confirming passenger connections, announcements made to passengers promoting the air carrier or pointing out sights of interest, and filling out company payroll and related records are not required for the safe operation of the aircraft.
(b) No flight crewmember may engage in, nor may any pilot in command permit, any activity during a critical phase of flight which could distract any flight crewmember from the performance of his or her duties or which could interfere in any way with the proper conduct of those duties. Activities such as eating meals, engaging in nonessential conversations within the cockpit and nonessential communications between the cabin and cockpit crews, and reading publications not related to the proper conduct of the flight are not required for the safe operation of the aircraft.
(c) For the purposes of this section, critical phases of flight includes all ground operations involving taxi, takeoff and landing, and all other flight operations conducted below 10,000 feet, except cruise flight.
Fired for just the ND? Probably not. Fired for just the weapon handling? Probably not. Put 'em together and he's gone.
No matter what the carry rules are, shoulda waited until the plane was safely down, and stopped before handling the weapon in any way. He was in a hurry, he messed up, and that's what got him fired.
The real issue from the beginning was pilot error in handling the weapon at all when he was not supposed to. The lousy procedures, holster/lock combo, ND, etc just made it more interesting and distracted just about everybody.