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An near midair collision occurred between an FA10 on ILS runway 26 approach into ont and a flight of three C305 birddog aircraft near the OM.
| Attributes | |
| ACN | 632557 |
| Time | |
| Date | 200410 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | intersection : fonta |
| State Reference | CA |
| Altitude | msl single value : 2700 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ont.tower tower : zzz.tower |
| Operator | general aviation : personal |
| Make Model Name | Falcon 10C |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | ils localizer & glide slope : 26l |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : ont.tower |
| Operator | general aviation : personal |
| Make Model Name | Bird Dog 305/321 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller non radar : 7 controller radar : 3 controller time certified in position1 : 3 |
| ASRS Report | 632557 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne critical non adherence : far |
| Independent Detector | atc equipment other atc equipment : radar (brite) other controllera other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action flight crew : took evasive action |
| Miss Distance | horizontal : 3000 vertical : 200 |
| Supplementary | |
| Problem Areas | Airspace Structure Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Fonta intersection is the OM for runway 26L and right ILS approachs to ont. The MSL altitude at fonta is 2800 ft. Fonta is located 1.25 SM outside of ont's airspace. There is no restr for VFR aircraft to fly between the edge of ont's airspace and fonta intersection below 2700 ft MSL. In today's incident the falcon jet was over fonta at 2800 ft. A flight of 3 birddogs off of chino airport transitioned without talking to ont 1/2 mi inside of fonta at 2500 ft MSL. The falcon jet had seen the aircraft, all three, and maneuvered behind them and continued the approach. This area is a midair collision waiting to happen. With continued staffing levels below minimums and more responsibilities on the tower staff. This is quickly becoming a major safety issue.
Original NASA ASRS Text
Title: AN NMAC OCCURRED BTWN AN FA10 ON ILS RWY 26 APCH INTO ONT AND A FLT OF THREE C305 BIRDDOG ACFT NEAR THE OM.
Narrative: FONTA INTXN IS THE OM FOR RWY 26L AND R ILS APCHS TO ONT. THE MSL ALT AT FONTA IS 2800 FT. FONTA IS LOCATED 1.25 SM OUTSIDE OF ONT'S AIRSPACE. THERE IS NO RESTR FOR VFR ACFT TO FLY BTWN THE EDGE OF ONT'S AIRSPACE AND FONTA INTXN BELOW 2700 FT MSL. IN TODAY'S INCIDENT THE FALCON JET WAS OVER FONTA AT 2800 FT. A FLT OF 3 BIRDDOGS OFF OF CHINO ARPT TRANSITIONED WITHOUT TALKING TO ONT 1/2 MI INSIDE OF FONTA AT 2500 FT MSL. THE FALCON JET HAD SEEN THE ACFT, ALL THREE, AND MANEUVERED BEHIND THEM AND CONTINUED THE APCH. THIS AREA IS A MIDAIR COLLISION WAITING TO HAPPEN. WITH CONTINUED STAFFING LEVELS BELOW MINIMUMS AND MORE RESPONSIBILITIES ON THE TWR STAFF. THIS IS QUICKLY BECOMING A MAJOR SAFETY ISSUE.
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.