Narrative:

We were holding short of runway 18 at aum on the east side. I was flying copilot and was talking to princeton radio on 122.5 to get our clearance. After princeton had finished issuing the clearance, the captain moved into takeoff position. As I change frequency to broadcast our intentions, I heard what I thought was a report 1 mi final. The captain said he checked final and saw no one. The event was witnessed by other parties on the airport. After returning to aum 2 days later, we were told the aircraft was an FAA small transport on an FAA flight check of the VOR and they had to go around. It was a bad decision to take the runway before both pilots had time to check. Also after departure, I found out the captain was on the clearance frequency (listening) so no one was on advisory until we were on the runway.

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Original NASA ASRS Text

Title: CAPT OF CPR SMT ACFT CAUSED ANOTHER ACFT ON FINAL AT A NON CTLED ARPT TO GAR BY TAKING OFF IN FRONT OF IT.

Narrative: WE WERE HOLDING SHORT OF RWY 18 AT AUM ON THE E SIDE. I WAS FLYING COPLT AND WAS TALKING TO PRINCETON RADIO ON 122.5 TO GET OUR CLRNC. AFTER PRINCETON HAD FINISHED ISSUING THE CLRNC, THE CAPT MOVED INTO TKOF POS. AS I CHANGE FREQ TO BROADCAST OUR INTENTIONS, I HEARD WHAT I THOUGHT WAS A RPT 1 MI FINAL. THE CAPT SAID HE CHKED FINAL AND SAW NO ONE. THE EVENT WAS WITNESSED BY OTHER PARTIES ON THE ARPT. AFTER RETURNING TO AUM 2 DAYS LATER, WE WERE TOLD THE ACFT WAS AN FAA SMT ON AN FAA FLT CHK OF THE VOR AND THEY HAD TO GAR. IT WAS A BAD DECISION TO TAKE THE RWY BEFORE BOTH PLTS HAD TIME TO CHK. ALSO AFTER DEP, I FOUND OUT THE CAPT WAS ON THE CLRNC FREQ (LISTENING) SO NO ONE WAS ON ADVISORY UNTIL WE WERE ON THE RWY.

Data retrieved from NASA's ASRS site as of July 2007 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.