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Pilot of aircraft X deviated from assigned SID. Aircraft Y flying the same SID overtook aircraft X, which resulted in less than standard separation.
| Attributes | |
| ACN | 143500 |
| Time | |
| Date | 199004 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : hpn |
| State Reference | NY |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 tower : hpn |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller non radar : 5 controller radar : 8 |
| ASRS Report | 143500 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| ASRS Report | 143542 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : required legal separation other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation Intra Facility Coordination Failure |
Narrative:
On 4/xx/90, I reported to work at N90. At XX49 local I assumed control of the hpn or position known as 'nyack.' hpn was departing runway 16 at the time. At XX50 local an light transport X departed hpn runway 16 and did not comply with the prescribed departure procedure. As a result I took action to maintain sep of light transport X (altitude 3000') from lga arrival traffic above him at 4000' on a southwest heading to land at lga. This action required a right turn to a northwest heading (340 degrees) to bring light transport X to a point west of hpn where a higher altitude could be obtained. Unknown to me (reasons to be listed below) at XX52 local hpn tower departed light transport Y off runway 16. The ARTS tag on light transport Y did ont acquire, nor was I in radio communication with the aircraft. At XX53, after observing a target that appeared to have departed hpn runway 16 and was making the prescried IFR climb, I took further action to separate light transport X from, at this time, unk traffic. These 2 aircraft were 1/2 mi and 300' apart at their closest. Why was I unaware of light transport Y? 1) no departure strip was posted. 2) no 'rolling' departure call was issued by hpn tower. 3) light transport Y was issued the wrong departure frequency. 4) no automatic ARTS tag for a period of 2 mins!
Original NASA ASRS Text
Title: PLT OF ACFT X DEVIATED FROM ASSIGNED SID. ACFT Y FLYING THE SAME SID OVERTOOK ACFT X, WHICH RESULTED IN LESS THAN STANDARD SEPARATION.
Narrative: ON 4/XX/90, I RPTED TO WORK AT N90. AT XX49 LCL I ASSUMED CTL OF THE HPN OR POS KNOWN AS 'NYACK.' HPN WAS DEPARTING RWY 16 AT THE TIME. AT XX50 LCL AN LTT X DEPARTED HPN RWY 16 AND DID NOT COMPLY WITH THE PRESCRIBED DEP PROC. AS A RESULT I TOOK ACTION TO MAINTAIN SEP OF LTT X (ALT 3000') FROM LGA ARR TFC ABOVE HIM AT 4000' ON A SW HDG TO LAND AT LGA. THIS ACTION REQUIRED A RIGHT TURN TO A NW HDG (340 DEGS) TO BRING LTT X TO A POINT W OF HPN WHERE A HIGHER ALT COULD BE OBTAINED. UNKNOWN TO ME (REASONS TO BE LISTED BELOW) AT XX52 LCL HPN TWR DEPARTED LTT Y OFF RWY 16. THE ARTS TAG ON LTT Y DID ONT ACQUIRE, NOR WAS I IN RADIO COM WITH THE ACFT. AT XX53, AFTER OBSERVING A TARGET THAT APPEARED TO HAVE DEPARTED HPN RWY 16 AND WAS MAKING THE PRESCRIED IFR CLB, I TOOK FURTHER ACTION TO SEPARATE LTT X FROM, AT THIS TIME, UNK TFC. THESE 2 ACFT WERE 1/2 MI AND 300' APART AT THEIR CLOSEST. WHY WAS I UNAWARE OF LTT Y? 1) NO DEP STRIP WAS POSTED. 2) NO 'ROLLING' DEP CALL WAS ISSUED BY HPN TWR. 3) LTT Y WAS ISSUED THE WRONG DEP FREQ. 4) NO AUTO ARTS TAG FOR A PERIOD OF 2 MINS!
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.