Narrative:

[Passengers] arrived about 30 minutes early for our flight. After loading the bags; [passenger] boarded the airplane with his wife while [pilot] and myself made small talk with him. During this conversation; he mentioned he was a pilot and his personal airplane was in the shop. He also mentioned he was running behind for his trip. He made a comment to 'just fly straight north around tampa and orlando's airspace and we'll be fine'. At the time it was a casual 'pilot to pilot' comment and had a non-serious tone. We chuckled it off and replied that we will just have to do whatever ATC tells us.I gave [the passengers] a safety briefing. After which he commented that he has never received one before. I explained to him that it was required before every flight. I then entered the cockpit and completed the before start checklist with [pilot]. Once the engines were started and avionics powered; I attempted to contact the published clearance frequency on the ground. With no response from either clearance or departure; [pilot] and I concluded that the weather and airspace conditions were safe for a VFR departure to receive the clearance in the air. Once airborne; I attempted to contact the published tampa departure frequency; again with no response. Shortly after I tried an orlando approach frequency that did respond and gave us an IFR clearance only a couple minutes after being airborne.because of the nature of the airspace; traffic; and receiving an airborne clearance; we received delay vectors toward the east. These turns caught [passenger's] attention and he came up to the cockpit shortly after leveling off at 10;000 feet. He asked in a much more stern and serious voice this time why weren't going north; repeating the same comment he said before departure. [Pilot] handed the controls off to me and explained thoroughly what was going on and that we will be on course shortly. During this time I was occupied complying with ATC instructions and may have missed small details about the exchange. Shortly after we are cleared on course and begin climbing to cruise.moments after we reach our cruising altitude of FL400; [passenger] again comes up to the cockpit; verbally upset about the minor delay and wants to know how much longer. I hand the radios off to [pilot] and remove my headset to talk to [passenger]. I told him we will have about 35 minutes remaining once we accelerate to our cruise speed. He demands that the 'hobbs should be rolled back' because we didn't take his suggestion and that we should have done what he said. I explained to him that we had no control over the situation and we as a crew have the authority over the aircraft's flight path. At this point he is becoming verbally demanding and beginning to make [pilot] and I uncomfortable. He continued with the comments about altering the flight time records and I tell him several times that he can contact the company with any concerns as to not escalate the situation. [Passenger] went back to his seat and the remainder of the flight was uneventful.[pilot] and I discussed what was happening and we determined that he fits the criteria for a level 1 security threat. After shutdown; [passenger] and his wife exited the aircraft as we unloaded baggage and they went about their way. Once the post flight duties were complete; [pilot] contacted flight control about the situation as per the actions outlined in the fom. I should also note that [passenger] was drinking alcohol throughout the flight provided by [company].[passenger] should not be allowed to fly on [company] aircraft; as another crew may take his suggestions seriously or have the situation escalated further.

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Original NASA ASRS Text

Title: CL-604 flight crew reported an intoxicated passenger disturbing the pilots during the course of their duties.

Narrative: [Passengers] arrived about 30 minutes early for our flight. After loading the bags; [Passenger] boarded the airplane with his wife while [Pilot] and myself made small talk with him. During this conversation; he mentioned he was a pilot and his personal airplane was in the shop. He also mentioned he was running behind for his trip. He made a comment to 'Just fly straight north around Tampa and Orlando's airspace and we'll be fine'. At the time it was a casual 'pilot to pilot' comment and had a non-serious tone. We chuckled it off and replied that we will just have to do whatever ATC tells us.I gave [the passengers] a safety briefing. After which he commented that he has never received one before. I explained to him that it was required before every flight. I then entered the cockpit and completed the before start checklist with [Pilot]. Once the engines were started and avionics powered; I attempted to contact the published clearance frequency on the ground. With no response from either clearance or departure; [Pilot] and I concluded that the weather and airspace conditions were safe for a VFR departure to receive the clearance in the air. Once airborne; I attempted to contact the published Tampa departure frequency; again with no response. Shortly after I tried an Orlando approach frequency that did respond and gave us an IFR clearance only a couple minutes after being airborne.Because of the nature of the airspace; traffic; and receiving an airborne clearance; we received delay vectors toward the east. These turns caught [Passenger's] attention and he came up to the cockpit shortly after leveling off at 10;000 feet. He asked in a much more stern and serious voice this time why weren't going north; repeating the same comment he said before departure. [Pilot] handed the controls off to me and explained thoroughly what was going on and that we will be on course shortly. During this time I was occupied complying with ATC instructions and may have missed small details about the exchange. Shortly after we are cleared on course and begin climbing to cruise.Moments after we reach our cruising altitude of FL400; [Passenger] again comes up to the cockpit; verbally upset about the minor delay and wants to know how much longer. I hand the radios off to [Pilot] and remove my headset to talk to [Passenger]. I told him we will have about 35 minutes remaining once we accelerate to our cruise speed. He demands that the 'Hobbs should be rolled back' because we didn't take his suggestion and that we should have done what he said. I explained to him that we had no control over the situation and we as a crew have the authority over the aircraft's flight path. At this point he is becoming verbally demanding and beginning to make [Pilot] and I uncomfortable. He continued with the comments about altering the flight time records and I tell him several times that he can contact the company with any concerns as to not escalate the situation. [Passenger] went back to his seat and the remainder of the flight was uneventful.[Pilot] and I discussed what was happening and we determined that he fits the criteria for a Level 1 security threat. After shutdown; [Passenger] and his wife exited the aircraft as we unloaded baggage and they went about their way. Once the post flight duties were complete; [Pilot] contacted flight control about the situation as per the actions outlined in the FOM. I should also note that [Passenger] was drinking alcohol throughout the flight provided by [Company].[Passenger] should not be allowed to fly on [Company] aircraft; as another crew may take his suggestions seriously or have the situation escalated further.

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.