<p>Need to locate the following pattern:</p>

<p>The letter I followed by a space then three alpha numerics followed by a space</p>

<p>"I ALN "
"I H21 "
"I 31M "</p>

<p>these items are also followed by a lat/lon that is trapped by this expression:</p>

<p>Dim regex As New Regex("\d{6} \d{7}")</p>

<p>Can the expressions be combined to return a match that would look like:</p>

<p>"H21 ###### #######"</p>

<p>Thanks,</p>

<p>Dave</p>

```
```
I ([a-zA-Z\d]{3} \d{6} \d{7})
```
```
Match group 1 would contain the three alphanumerics plus the numbers you already catch with your other regex.
EDIT: Does not work because the pattern described in the question does not reflect what the author meant in the first place. What really was meant was first clarified in the comments.