Still waiting for passport request

[premchandkv]

Hi, i sent my application on Feb 29,2016 and received my acknowledgement receipt on the same day. Schedule 4 form was also submitted right after that. Right now, its been over 5 months, and the status for eligibility is " review in progress" and medical results are passed. documents have been provided. But i still haven't got the passport request. Is this usual ? its been 5 months and i'm still waiting.