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Pilot of mooney 20J responds to lahso request from tower but is not heard due to blocked frequency and high communication activity. This forces a go around of B737.
| Attributes | |
| ACN | 382217 |
| Time | |
| Date | 199710 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mdw |
| State Reference | IL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | M-20 J (201) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground other : taxi landing other |
| Route In Use | approach : visual |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : go around landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 30 flight time total : 1500 flight time type : 500 |
| ASRS Report | 382217 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | other other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
I was cleared to land runway 22R and was asked if I could hold short of runway 31C. I replied that I could. Mdw tower asked for an acknowledgement upon landing for hold short. I replied upon rollout that I was 'holding short.' mdw tower then had an air carrier on short final to runway 31C go around. Mdw tower then called and asked why I had not called holding short. I replied that I had called 'holding short.' mdw ground later said that my transmission may have been blocked due to high activity. At those times when communication activity is high, it may be advisable to not have lahso in effect, if an acknowledgement is required.
Original NASA ASRS Text
Title: PLT OF MOONEY 20J RESPONDS TO LAHSO REQUEST FROM TWR BUT IS NOT HEARD DUE TO BLOCKED FREQ AND HIGH COM ACTIVITY. THIS FORCES A GAR OF B737.
Narrative: I WAS CLRED TO LAND RWY 22R AND WAS ASKED IF I COULD HOLD SHORT OF RWY 31C. I REPLIED THAT I COULD. MDW TWR ASKED FOR AN ACKNOWLEDGEMENT UPON LNDG FOR HOLD SHORT. I REPLIED UPON ROLLOUT THAT I WAS 'HOLDING SHORT.' MDW TWR THEN HAD AN ACR ON SHORT FINAL TO RWY 31C GAR. MDW TWR THEN CALLED AND ASKED WHY I HAD NOT CALLED HOLDING SHORT. I REPLIED THAT I HAD CALLED 'HOLDING SHORT.' MDW GND LATER SAID THAT MY XMISSION MAY HAVE BEEN BLOCKED DUE TO HIGH ACTIVITY. AT THOSE TIMES WHEN COM ACTIVITY IS HIGH, IT MAY BE ADVISABLE TO NOT HAVE LAHSO IN EFFECT, IF AN ACKNOWLEDGEMENT IS REQUIRED.
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.