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Over the dca class B airspace at 14200 ft on a photo mission the reporter experienced a TCASII alert. A B777 passed within 1800 ft horizontally and 100 ft vertically. Both aircraft made evasive action turns. The reporter was not in radio contact with ATC because when coordination over the phone was attempted center did not want to work the mission.
| Attributes | |
| ACN | 332896 |
| Time | |
| Date | 199604 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : aml airport : hgr |
| State Reference | VA |
| Altitude | msl bound lower : 14200 msl bound upper : 14200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | other |
| Make Model Name | PA-31 Navajo Chieftan/Mojave/Navajo T1020 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | PA-31 Navajo Chieftan/Mojave/Navajo T1020 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5400 flight time type : 300 |
| ASRS Report | 332896 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 1800 vertical : 100 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
Work over the dca washington TCA at 14200 ft on a photo mission for united states government, we had a TCASII alert. I saw a B777 very close on copilot's side, low and climbing, so we made evasive action. We were not in radio contact with ATC because in the morning when we tried to let them know about our mission, they did not want to work with us. This is not the first time this has happened. Please contact me about this before safety is jeopardized again. Callback conversation with reporter revealed the following information: the reporter stated he was flying a piper chieftan PA31. He said his mission requires the flight be within 25 ft vertically and 50 ft horizontally in space. He stated the special differential GPS installed in the aircraft facilitates this. However, the autoplt cannot be used because autoplt corrections are made with bank which the photo mission specifications will not allow. He stated he had another person on board who is the cameraman but is not looking for other traffic. He is flying single pilot.
Original NASA ASRS Text
Title: OVER THE DCA CLASS B AIRSPACE AT 14200 FT ON A PHOTO MISSION THE RPTR EXPERIENCED A TCASII ALERT. A B777 PASSED WITHIN 1800 FT HORIZLY AND 100 FT VERTLY. BOTH ACFT MADE EVASIVE ACTION TURNS. THE RPTR WAS NOT IN RADIO CONTACT WITH ATC BECAUSE WHEN COORD OVER THE PHONE WAS ATTEMPTED CTR DID NOT WANT TO WORK THE MISSION.
Narrative: WORK OVER THE DCA WASHINGTON TCA AT 14200 FT ON A PHOTO MISSION FOR UNITED STATES GOV, WE HAD A TCASII ALERT. I SAW A B777 VERY CLOSE ON COPLT'S SIDE, LOW AND CLBING, SO WE MADE EVASIVE ACTION. WE WERE NOT IN RADIO CONTACT WITH ATC BECAUSE IN THE MORNING WHEN WE TRIED TO LET THEM KNOW ABOUT OUR MISSION, THEY DID NOT WANT TO WORK WITH US. THIS IS NOT THE FIRST TIME THIS HAS HAPPENED. PLEASE CONTACT ME ABOUT THIS BEFORE SAFETY IS JEOPARDIZED AGAIN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED HE WAS FLYING A PIPER CHIEFTAN PA31. HE SAID HIS MISSION REQUIRES THE FLT BE WITHIN 25 FT VERTLY AND 50 FT HORIZLY IN SPACE. HE STATED THE SPECIAL DIFFERENTIAL GPS INSTALLED IN THE ACFT FACILITATES THIS. HOWEVER, THE AUTOPLT CANNOT BE USED BECAUSE AUTOPLT CORRECTIONS ARE MADE WITH BANK WHICH THE PHOTO MISSION SPECS WILL NOT ALLOW. HE STATED HE HAD ANOTHER PERSON ON BOARD WHO IS THE CAMERAMAN BUT IS NOT LOOKING FOR OTHER TFC. HE IS FLYING SINGLE PLT.
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.