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Private pilot of an experimental small biplane descended below assigned altitude in class B airspace while approaching to land.
| Attributes | |
| ACN | 313170 |
| Time | |
| Date | 199508 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dal |
| State Reference | TX |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | general aviation : personal |
| Make Model Name | Experimental |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 60 flight time total : 3500 flight time type : 500 |
| ASRS Report | 313170 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Inadvertent deviation from altitude clearance in class B airspace on approach control. Callback conversation with reporter revealed the following information: reporter stated that he was operating an old world war I biplane trainer built by spain and now certificated in the experimental category. It's gross weight is approximately 900 pounds and is obviously very slow. Therefore, when he operates out of his home base of love field in dallas, tx, in class B airspace, it causes ATC to allow more room to accommodate his aircraft. It was during a VFR approach wherein he was assigned 2500 ft for allowing traffic separation underneath his aircraft that he wandered off altitude and descended off altitude that ATC intervened and redirected him to the tower for landing. Hence, this report. His aircraft is equipped with a encoding altimeter with transponder and appropriate communication radios to operate in class B airspace.
Original NASA ASRS Text
Title: PVT PLT OF AN EXPERIMENTAL SMALL BIPLANE DSNDED BELOW ASSIGNED ALT IN CLASS B AIRSPACE WHILE APCHING TO LAND.
Narrative: INADVERTENT DEV FROM ALT CLRNC IN CLASS B AIRSPACE ON APCH CTL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT HE WAS OPERATING AN OLD WORLD WAR I BIPLANE TRAINER BUILT BY SPAIN AND NOW CERTIFICATED IN THE EXPERIMENTAL CATEGORY. IT'S GROSS WT IS APPROX 900 LBS AND IS OBVIOUSLY VERY SLOW. THEREFORE, WHEN HE OPERATES OUT OF HIS HOME BASE OF LOVE FIELD IN DALLAS, TX, IN CLASS B AIRSPACE, IT CAUSES ATC TO ALLOW MORE ROOM TO ACCOMMODATE HIS ACFT. IT WAS DURING A VFR APCH WHEREIN HE WAS ASSIGNED 2500 FT FOR ALLOWING TFC SEPARATION UNDERNEATH HIS ACFT THAT HE WANDERED OFF ALT AND DSNDED OFF ALT THAT ATC INTERVENED AND REDIRECTED HIM TO THE TWR FOR LNDG. HENCE, THIS RPT. HIS ACFT IS EQUIPPED WITH A ENCODING ALTIMETER WITH XPONDER AND APPROPRIATE COM RADIOS TO OPERATE IN CLASS B AIRSPACE.
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.