Close proximity commuter light transport-unk on short final to runway 31 at acy.

Attributes
ACN	110301
Time
Date	198905
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : acy
State Reference	NJ
Altitude	agl bound lower : 900 agl bound upper : 900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : acy
Operator	common carrier : air carrier
Make Model Name	Light Transport, High Wing, 2 Turboprop Eng
Flight Phase	other
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	other
Route In Use	approach : visual
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 18000 flight time type : 1000
ASRS Report	110301
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 300
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We told approach we had final traffic and told to follow. Called tower and cleared to land. Right base to final we saw conflicting traffic and maneuvered to avoid. Tower had no knowledge of aircraft.

Original NASA ASRS Text

Title: CLOSE PROX COMMUTER LTT-UNK ON SHORT FINAL TO RWY 31 AT ACY.

Narrative: WE TOLD APCH WE HAD FINAL TFC AND TOLD TO FOLLOW. CALLED TWR AND CLRED TO LAND. RIGHT BASE TO FINAL WE SAW CONFLICTING TFC AND MANEUVERED TO AVOID. TWR HAD NO KNOWLEDGE OF ACFT.

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.