Locked in a Hawker

[gutshotdraw]

In the Hawker 700, if you had the APU running and the APU air on, you didn't leave the airplane and close the door. If you did, you wouldn't get back in until the APU flamed out from fuel exhaustion or you climbed into the hellhole and disconnected the APU control box. Too much air pressure on the inside of the plug type door.

 

[MauleSkinner]

Just as an FYI, those Hawker locks work just fine the other way, too...We got our locked airplane broken into by some high school kids looking for booze once. It takes me all of 5 seconds to get the handle out when it's locked.

That reminds me...Gotta talk to our new mech about making something to prevent that...the old one left before he got it done.

Fly safe!

David

 

[400A]

In the Hawker 700, if you had the APU running and the APU air on, you didn't leave the airplane and close the door. If you did, you wouldn't get back in until the APU flamed out from fuel exhaustion or you climbed into the hellhole and disconnected the APU control box. Too much air pressure on the inside of the plug type door.

I did not do differences, does turning on #1 inverter not power the fan that prevents that(if all is working) like on the 800XP?

 

[NYYfan]

I cant remember about which inverter powers it but that shouldnt matter. Just crack the DV window a hair and you wont have that problem if you need to close the main door. I dont think putting the emergency exit back in is a mx function just more of a pain

 

[gutshotdraw]

We were under orders not to open the DV window (might cause leaks in wet weather they said). As to the #1 inverter powering a fan, it's been 12 years now since my last Hawker recurrent but I think that was an improvement on the 800 not available on the 'ol 700.

 

[MauleSkinner]

As to the #1 inverter powering a fan, it's been 12 years now since my last Hawker recurrent but I think that was an improvement on the 800 not available on the 'ol 700.

That AC-powered venturi fan goes at least back through the 400's.

Fly safe!

David

 

[AV8R N8]

The 700 has an ac powered fan-operated venturi. Its on the XS2 bus. As long as your Inverters are on and the PRESS GEAR SW is Auto, the cabin will not pressurize.

 

[waka]

We were under orders not to open the DV window (might cause leaks in wet weather they said). As to the #1 inverter powering a fan, it's been 12 years now since my last Hawker recurrent but I think that was an improvement on the 800 not available on the 'ol 700.

Screw that! I'm of the camp that thinks you're better off opening and closing an airplane window to prevent leaks.....it exercises the seals.

 

[Jeff Helgeson]

Hawkers keys have always been strange

When I flew the 400s and 700s, we never locked the A/C. The key was kind of strange and a special allow or something. It could only be replaced from one location in Europe and was very expensive.

I never had a problem with pressurization on the ground with the APU air running, but I never closed the door completely either. The APU was very loud on the older models when using the air.

Other than the key issue, do you like the new model??

Do tell!

 

[TimsKeeper]

locked out

This thread got off-topic pretty quick. The problem is not associated with the venturi fan. This problem is a locking mechanism issue.

That happened several time on an 800XP I used to fly. It would get locked and we would have to hand the keys out to the line guys.

Took our maintenance a couple times to get it right but they finally found some solution (unfortunately I wasn't in the loop what that was).