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Captain of a B737 stopped his descent on the GS and climbed in order to avoid a helicopter crossing through the GS at 500 ft AGL.
| Attributes | |
| ACN | 468024 |
| Time | |
| Date | 200003 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : phx.airport |
| State Reference | AZ |
| Altitude | agl single value : 500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : phx.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 8r |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : phx.tower |
| Make Model Name | Helicopter |
| Flight Phase | cruise : level |
| Route In Use | approach : traffic pattern |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 240 flight time total : 10000 flight time type : 6000 |
| ASRS Report | 468024 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
TCASII RA below 500 ft on approach -- helicopter. Tower allowed helicopter to get too close to us and violate our glide path. Helicopter made a turn in violation of tower clearance. After clear of conflict and missed approach begun, we made a safe 40 degree flap landing. Talked to tower supervisors at XA22 and told them I would file report and call it a near miss. In all my yrs of flying (36) this was the only time I had helicopter traffic cross under me inside the FAF or get that clearance. Believe tower erred and helicopter pilot erred.
Original NASA ASRS Text
Title: CAPT OF A B737 STOPPED HIS DSCNT ON THE GS AND CLBED IN ORDER TO AVOID A HELI XING THROUGH THE GS AT 500 FT AGL.
Narrative: TCASII RA BELOW 500 FT ON APCH -- HELI. TWR ALLOWED HELI TO GET TOO CLOSE TO US AND VIOLATE OUR GLIDE PATH. HELI MADE A TURN IN VIOLATION OF TWR CLRNC. AFTER CLR OF CONFLICT AND MISSED APCH BEGUN, WE MADE A SAFE 40 DEG FLAP LNDG. TALKED TO TWR SUPVRS AT XA22 AND TOLD THEM I WOULD FILE RPT AND CALL IT A NEAR MISS. IN ALL MY YRS OF FLYING (36) THIS WAS THE ONLY TIME I HAD HELI TFC CROSS UNDER ME INSIDE THE FAF OR GET THAT CLRNC. BELIEVE TWR ERRED AND HELI PLT ERRED.
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.