Multi engine pilot has an near midair collision during cruise flight.

Attributes
ACN	686549
Time
Date	200602
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ffz.airport
State Reference	AZ
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : ffz.tower
Operator	general aviation : personal
Make Model Name	Small Aircraft Low Wing 2 Eng Retractable Gear
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : ffz.tower
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	other
Function	flight crew : single pilot
Experience	flight time last 90 days : 100 flight time total : 1550
ASRS Report	686549
Events
Anomaly	conflict : airborne critical conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Facility FAA Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance

Narrative:

Had to climb to avoid an aircraft that turned into my aircraft's direction of flight. I climbed to avoid this aircraft; rather than descending; due to terrain in the area. I was talking to the controllers at falcon field (class D airspace) when this occurred. They never saw the other aircraft due to their radar feed having a 'dead spot' in this geographical area. The other aircraft had its navigation lights on and I was able to determine that it was on a course to get too close to my aircraft.

Original NASA ASRS Text

Title: MULTI ENG PLT HAS AN NMAC DURING CRUISE FLT.

Narrative: HAD TO CLB TO AVOID AN ACFT THAT TURNED INTO MY ACFT'S DIRECTION OF FLT. I CLBED TO AVOID THIS ACFT; RATHER THAN DSNDING; DUE TO TERRAIN IN THE AREA. I WAS TALKING TO THE CTLRS AT FALCON FIELD (CLASS D AIRSPACE) WHEN THIS OCCURRED. THEY NEVER SAW THE OTHER ACFT DUE TO THEIR RADAR FEED HAVING A 'DEAD SPOT' IN THIS GEOGRAPHICAL AREA. THE OTHER ACFT HAD ITS NAV LIGHTS ON AND I WAS ABLE TO DETERMINE THAT IT WAS ON A COURSE TO GET TOO CLOSE TO MY ACFT.

Data retrieved from NASA's ASRS site as of January 2009 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.