ZLC controller describes a flight into an airport and is concerned about the minimum IFR altitudes (...

Narrative:

Aircraft X flying in to 36U from the south. Sector 32 called and said he was looking for the visual but if he didn't see the airport would execute an instrument approach procedure. By letter of agreement (LOA) sector 3 has control for 36U landers from 32. I checked my minimum instrument altitudes (mia) in the area and thought 13;000 feet was a safe altitude. It was for a time but the mia creeps up to 13;900 feet. I misinterpreted the mia lines with sector lines and approach lines and thought 13;000 feet was a safe altitude until the mia goes to 12;000 feet closer to the airport. The en-route minimum safe altitude warning (emsaw) alert didn't go off so I didn't question the safety of the flight since I already thought the altitude was safe.maybe reconsider emsaw alerts procedures around landing airports. When a hard altitude entered would trigger the alert.

Original NASA ASRS Text

Title: ZLC Controller describes a flight into an airport and is concerned about the Minimum IFR Altitudes (MIA) and altitude to assign the aircraft. Controller should have climbed the aircraft a thousand feet higher.

Narrative: Aircraft X flying in to 36U from the south. Sector 32 called and said he was looking for the visual but if he didn't see the airport would execute an instrument approach procedure. By Letter of Agreement (LOA) sector 3 has control for 36U landers from 32. I checked my Minimum Instrument Altitudes (MIA) in the area and thought 13;000 feet was a safe altitude. It was for a time but the MIA creeps up to 13;900 feet. I misinterpreted the MIA lines with sector lines and approach lines and thought 13;000 feet was a safe altitude until the MIA goes to 12;000 feet closer to the airport. The En-Route Minimum Safe Altitude Warning (EMSAW) alert didn't go off so I didn't question the safety of the flight since I already thought the Altitude was safe.Maybe reconsider EMSAW alerts procedures around landing airports. When a hard altitude entered would trigger the alert.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1232770
Time
Date	201501
Local Time Of Day	1201-1800
Place
Locale Reference	ZLC.ARTCC
State Reference	UT
Environment
Light	Daylight
Aircraft 1
Make Model Name	Small Transport Low Wing 2 Turbojet Eng
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 4.7
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT

ZLC controller describes a flight into an airport and is concerned about the minimum IFR altitudes (mia) and altitude to assign the aircraft. Controller should have climbed the aircraft a thousand feet higher.