Potential close proximity between two small GA aircraft.

Attributes
ACN	83677
Time
Date	198802
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : arb
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : arb tower : dfw
Operator	other
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : takeoff landing other other
Flight Plan	None
Aircraft 2
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff landing other other
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	83677
Person 2
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	aircraft equipment problem : less severe conflict : ground less severe
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft X took off for flight to west. Pilot of X then called tower several minutes later for arrival instructions. I thought the pilot might be experiencing some difficulties due to the short flight. I asked the pilot if she was experiencing any difficulties. Her reply was negative and was given standard arrival information. When she reported a couple miles out she was sequenced to follow small aircraft Y on base which she acknowledged. Aircraft Y was cleared for a touch and go while the spacing between X and Y decreased. As Y was touching down I determined that required spacing would not exist and issued a go around to X while on 1/2 mile final. Her reply was a go around was impossible. I then asked aircraft Y to initiate a turn as soon as possible after departure to ensure required separation. Talking to the pilot of aircraft X later she said her door opened on departure. I then asked why she couldn't go around she said it was too cold inside the aircraft (OAT 5 degree F). Fortunately the pilot of aircraft Y was knowledgeable and had the big flic of what was going on. And only because of this pilot a system error was averted. My thanks to him. If only aircraft X pilot would of confessed her situation I would have given her special treatment.

Original NASA ASRS Text

Title: POTENTIAL CLOSE PROX BETWEEN TWO SMALL GA ACFT.

Narrative: ACFT X TOOK OFF FOR FLT TO W. PLT OF X THEN CALLED TWR SEVERAL MINUTES LATER FOR ARR INSTRUCTIONS. I THOUGHT THE PLT MIGHT BE EXPERIENCING SOME DIFFICULTIES DUE TO THE SHORT FLT. I ASKED THE PLT IF SHE WAS EXPERIENCING ANY DIFFICULTIES. HER REPLY WAS NEGATIVE AND WAS GIVEN STANDARD ARR INFORMATION. WHEN SHE REPORTED A COUPLE MILES OUT SHE WAS SEQUENCED TO FOLLOW SMA Y ON BASE WHICH SHE ACKNOWLEDGED. ACFT Y WAS CLRED FOR A TOUCH AND GO WHILE THE SPACING BETWEEN X AND Y DECREASED. AS Y WAS TOUCHING DOWN I DETERMINED THAT REQUIRED SPACING WOULD NOT EXIST AND ISSUED A go around TO X WHILE ON 1/2 MILE FINAL. HER REPLY WAS A go around WAS IMPOSSIBLE. I THEN ASKED ACFT Y TO INITIATE A TURN AS SOON AS POSSIBLE AFTER DEPARTURE TO ENSURE REQUIRED SEPARATION. TALKING TO THE PLT OF ACFT X LATER SHE SAID HER DOOR OPENED ON DEP. I THEN ASKED WHY SHE COULDN'T GO AROUND SHE SAID IT WAS TOO COLD INSIDE THE ACFT (OAT 5 DEG F). FORTUNATELY THE PLT OF ACFT Y WAS KNOWLEDGEABLE AND HAD THE BIG FLIC OF WHAT WAS GOING ON. AND ONLY BECAUSE OF THIS PLT A SYSTEM ERROR WAS AVERTED. MY THANKS TO HIM. IF ONLY ACFT X PLT WOULD OF CONFESSED HER SITUATION I WOULD HAVE GIVEN HER SPECIAL TREATMENT.

Data retrieved from NASA's ASRS site as of August 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.