Whats's the procedure for resetting the IRS. I messed up during normal startup procedure ...

 

During normal startup, I did the following:

 

1) align IRS left selector

2) align IRS right selector

3) copied the GPS L position from the POS INIT page2 of the FMC

4) pasted it into the GPS position (from the POS INIT page1 of the FMC)

5) align IRS left selector

6) align IRS right selector

 

But at step 5, I accidently switched the IRS left selector off. After I tried to to recover by flipping to NAV thereafter, I haven't been able to get a map on my MFD.

 

I've tried to go back to the IRS panel, turn both IRS to OFF, and redo things, but I either get blinking align lamps, or an absence of a map.

 

My faulty attempt:

1) IRS selectors off ... 

2) after align lights extinguished ... irs selectors to align

3) ON DC lights replaced by ALIGN buttons illuminated. 

4) ALIGN buttons start blinking with a code of -------0--08

5) Switching to NAV does nothing.

 

Obviously, I'm doing something wrong. The GPS value in the CDU doesn't apperar to be able to be changed at this point.

I had this issue a couple of times I haven't been able to work it out.... would be great to have a suggestion from more experienced PMDG captains

You don't have to put the switch to align on 737. Right to the NAV. Tutorial number 2 is enough to understand the procedure.

Thanks Rostyslav,

 

In my trials, their doesn't appear to be any performance difference whether one goes to NAV directly (as in tutorial 2) or stops at ALIGN first (as per the checklist I am using). It does appear however, to affect the ability to recover from a misclick.

 

Going directly to NAV, and misclicking their after results in no map. Turning the misclicked IRS selector OFF, then carefully back to NAV, will recycle the alignment and provide the map.

See IRS Fault in QRH pg 11-8, I believe that will illuminate the topic for you.  Always a good idea to reach for this handbook when able.