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While being vectored for a practice ILS approach this helicopter has a very close near midair collision.
| Attributes | |
| ACN | 301882 |
| Time | |
| Date | 199504 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : apa |
| State Reference | CO |
| Altitude | msl bound lower : 8000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : den |
| Operator | common carrier : air taxi |
| Make Model Name | Helicopter |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Route In Use | arrival : on vectors enroute : on vectors |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 75 flight time total : 5000 flight time type : 200 |
| ASRS Report | 301882 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe conflict : nmac other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 25 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
While engaged on a practice ILS approach with radar vectors from den approach the aircraft's microphone switch was locked in the open position. I could not transmit or receive. While on the localizer outside the FAF a small black and white high-winged single engine aircraft passed from left to right, perpendicular to my flight path. When I attempted to contact approach I realized my microphone was stuck open. I then aborted the approach, flew outside of the class D airspace, and returned to my base avoiding controled airspace.
Original NASA ASRS Text
Title: WHILE BEING VECTORED FOR A PRACTICE ILS APCH THIS HELI HAS A VERY CLOSE NMAC.
Narrative: WHILE ENGAGED ON A PRACTICE ILS APCH WITH RADAR VECTORS FROM DEN APCH THE ACFT'S MIKE SWITCH WAS LOCKED IN THE OPEN POS. I COULD NOT XMIT OR RECEIVE. WHILE ON THE LOC OUTSIDE THE FAF A SMALL BLACK AND WHITE HIGH-WINGED SINGLE ENG ACFT PASSED FROM L TO R, PERPENDICULAR TO MY FLT PATH. WHEN I ATTEMPTED TO CONTACT APCH I REALIZED MY MIKE WAS STUCK OPEN. I THEN ABORTED THE APCH, FLEW OUTSIDE OF THE CLASS D AIRSPACE, AND RETURNED TO MY BASE AVOIDING CTLED AIRSPACE.
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.