"Jim Macklin" wrote in message
news:XWyef.3487$QW2.1662@dukeread08...

No instructions to "descend and maintain" means you can
remain at your altitude after the IFR approach clearance is
issued, the maintain 4,000 is required by FAA procedure
since the airline 727 descended to IAP and hit a mountain
near DC about 30 years ago.


The aircraft was instructed to "maintain 4000".



A Cruise clearance allows you to fly any legal and safe
altitude at pilots discretion, climbing back to altitude if
desired, as long as the pilot has not reported leaving the
altitude.


A cruise clearance was not issued.



A clearance limit to the airport implies "clear for the
approach at arrival" but if comm. has not been lost, you
should get a specific clearance.


An airport clearance limit does not imply an approach clearance.