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A CRJ200 flight was cleared on dca bilit 1 RNAV arrival in a non-GPS aircraft. The crew was concerned about a P-56 violation lacking ATC track guidance.
| Attributes | |
| ACN | 716698 |
| Time | |
| Date | 200611 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pct.tracon |
| State Reference | VA |
| Altitude | msl single value : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : pct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 180 flight time total : 7000 flight time type : 4000 |
| ASRS Report | 716698 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 180 flight time total : 4200 flight time type : 2000 |
| ASRS Report | 716102 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | Company Aircraft ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
En route to dca we were out of 10000 ft within 40 mi of dca on filed routing to bilit intersection then direct to dca. Our flight was handed off to potomac approach and given descent to 8000 ft. Approach then instructed our flight to proceed to a fix that was on the bilit 1 arrival. We informed ATC that it was not filed for this arrival into dca. We were assigned an aircraft that was /K and had no GPS capability. The bilit 1 is an RNAV arrival (a 'B' arrival) which requires GPS. We were given clearance on to bilit intersection then handed off to final approach control. Filed routing had us go to bilit then direct to dca. After passing bilit and en route to dca; the crew queried ATC for a heading prior to entering P-56 airspace. Final approach thought that we were supposed to be on the bilit 1 arrival. They were informed that our flight was not filed for that. We were given a vector to avoid P-56 and later on visual to runway 19. It was not known why approach thought that we were on the bilit 1 but this assumption could have led to a violation of P-56.
Original NASA ASRS Text
Title: A CRJ200 FLT WAS CLRED ON DCA BILIT 1 RNAV ARR IN A NON-GPS ACFT. THE CREW WAS CONCERNED ABOUT A P-56 VIOLATION LACKING ATC TRACK GUIDANCE.
Narrative: ENRTE TO DCA WE WERE OUT OF 10000 FT WITHIN 40 MI OF DCA ON FILED ROUTING TO BILIT INTXN THEN DIRECT TO DCA. OUR FLT WAS HANDED OFF TO POTOMAC APCH AND GIVEN DSCNT TO 8000 FT. APCH THEN INSTRUCTED OUR FLT TO PROCEED TO A FIX THAT WAS ON THE BILIT 1 ARR. WE INFORMED ATC THAT IT WAS NOT FILED FOR THIS ARR INTO DCA. WE WERE ASSIGNED AN ACFT THAT WAS /K AND HAD NO GPS CAPABILITY. THE BILIT 1 IS AN RNAV ARR (A 'B' ARR) WHICH REQUIRES GPS. WE WERE GIVEN CLRNC ON TO BILIT INTXN THEN HANDED OFF TO FINAL APCH CTL. FILED ROUTING HAD US GO TO BILIT THEN DIRECT TO DCA. AFTER PASSING BILIT AND ENRTE TO DCA; THE CREW QUERIED ATC FOR A HDG PRIOR TO ENTERING P-56 AIRSPACE. FINAL APCH THOUGHT THAT WE WERE SUPPOSED TO BE ON THE BILIT 1 ARR. THEY WERE INFORMED THAT OUR FLT WAS NOT FILED FOR THAT. WE WERE GIVEN A VECTOR TO AVOID P-56 AND LATER ON VISUAL TO RWY 19. IT WAS NOT KNOWN WHY APCH THOUGHT THAT WE WERE ON THE BILIT 1 BUT THIS ASSUMPTION COULD HAVE LED TO A VIOLATION OF P-56.
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.