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A C182 departing dvt runway 7R simultaneously with a PA34 departing runway 7L turned into the PA34 and experienced an near midair collision because the closely spaced departures execute the same procedure.
| Attributes | |
| ACN | 676960 |
| Time | |
| Date | 200511 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dvt.airport |
| State Reference | AZ |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dvt.tower |
| Operator | general aviation : personal |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Route In Use | departure sid : dvt 1 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : dvt.tower |
| Operator | general aviation : instructional |
| Make Model Name | PA-30 Twin Comanche |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Route In Use | departure sid : dvt 1 |
| Person 1 | |
| Affiliation | other |
| Qualification | pilot : flight engineer pilot : commercial pilot : multi engine pilot : atp pilot : cfi pilot : instrument |
| Experience | flight time last 90 days : 20 flight time total : 11000 flight time type : 3000 |
| ASRS Report | 676960 |
| Person 2 | |
| Affiliation | other |
| Events | |
| Anomaly | conflict : nmac non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action flight crew : exited adverse environment |
| Miss Distance | horizontal : 300 vertical : 330 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance Chart Or Publication Airport |
| Primary Problem | Ambiguous |
Narrative:
After takeoff; flying runway heading; was given the instruction by ATC to continue to fly the deer valley 1 departure off runway 7R. Pilot started to turn left as depicted on the departure procedure when I took over and stopped the turn because a twin flying parallel (runway 7L) was too close and was an imminent convergent. Prevention: phoenix deer valley 1 departure (DVT1.pxr) should be re-evaluated insofar as runway 7R goes; and is unsafe when multiple departures are using both runways. The initial climb instructions for runway 7L/right are ambiguous: for instance; the pilot on runway 7L decides to intercept R-336 while pilot on runway 7R decides to climb left.
Original NASA ASRS Text
Title: A C182 DEPARTING DVT RWY 7R SIMULTANEOUSLY WITH A PA34 DEPARTING RWY 7L TURNED INTO THE PA34 AND EXPERIENCED AN NMAC BECAUSE THE CLOSELY SPACED DEPS EXECUTE THE SAME PROC.
Narrative: AFTER TKOF; FLYING RWY HDG; WAS GIVEN THE INSTRUCTION BY ATC TO CONTINUE TO FLY THE DEER VALLEY 1 DEP OFF RWY 7R. PLT STARTED TO TURN L AS DEPICTED ON THE DEP PROC WHEN I TOOK OVER AND STOPPED THE TURN BECAUSE A TWIN FLYING PARALLEL (RWY 7L) WAS TOO CLOSE AND WAS AN IMMINENT CONVERGENT. PREVENTION: PHOENIX DEER VALLEY 1 DEP (DVT1.PXR) SHOULD BE RE-EVALUATED INSOFAR AS RWY 7R GOES; AND IS UNSAFE WHEN MULTIPLE DEPS ARE USING BOTH RWYS. THE INITIAL CLB INSTRUCTIONS FOR RWY 7L/R ARE AMBIGUOUS: FOR INSTANCE; THE PLT ON RWY 7L DECIDES TO INTERCEPT R-336 WHILE PLT ON RWY 7R DECIDES TO CLB L.
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.