A300 flight crew took evasive action on ILS final to avoid cessna.

Attributes
ACN	739397
Time
Date	200705
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mtpp.airport
State Reference	FO
Altitude	msl single value : 4000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mtpp.tracon
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 10
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : mtpp.tracon
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	739397
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 400 vertical : 0
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

On ILS approach to runway 10 at mtpp 15 DME. Level 4000 ft 250 KTS cleared for approach and centered on localizer course inbound. Encountered traffic opposite direction 4000 ft outbound on ILS course centerline. First sighting 3/4 mi and closing rapidly. Initiated right turn 50 degree bank within 3 seconds of first sighting. Passed within 400 ft horizontally and 0 ft vertically. Cessna initiated no evasive maneuvers. No injuries to passenger or flight attendant crew. TCAS did not pick up intruding aircraft until 1 mi and did not give escape command until after conflict was resolved. I suspect cessna turned transponder on at 1 mi proximity. Mtpp approach had advised of this traffic; to be safely south of ILS centerline. This aircraft did not show on the TCAS prior to 1 mi. Visibility at 4000 ft approximately 2 1/2 mi in haze.

Original NASA ASRS Text

Title: A300 FLT CREW TOOK EVASIVE ACTION ON ILS FINAL TO AVOID CESSNA.

Narrative: ON ILS APCH TO RWY 10 AT MTPP 15 DME. LEVEL 4000 FT 250 KTS CLRED FOR APCH AND CTRED ON LOC COURSE INBOUND. ENCOUNTERED TFC OPPOSITE DIRECTION 4000 FT OUTBOUND ON ILS COURSE CTRLINE. FIRST SIGHTING 3/4 MI AND CLOSING RAPIDLY. INITIATED R TURN 50 DEG BANK WITHIN 3 SECONDS OF FIRST SIGHTING. PASSED WITHIN 400 FT HORIZONTALLY AND 0 FT VERTICALLY. CESSNA INITIATED NO EVASIVE MANEUVERS. NO INJURIES TO PAX OR FLT ATTENDANT CREW. TCAS DID NOT PICK UP INTRUDING ACFT UNTIL 1 MI AND DID NOT GIVE ESCAPE COMMAND UNTIL AFTER CONFLICT WAS RESOLVED. I SUSPECT CESSNA TURNED XPONDER ON AT 1 MI PROX. MTPP APCH HAD ADVISED OF THIS TFC; TO BE SAFELY S OF ILS CTRLINE. THIS ACFT DID NOT SHOW ON THE TCAS PRIOR TO 1 MI. VISIBILITY AT 4000 FT APPROX 2 1/2 MI IN HAZE.

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.