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Pilot of a shorts brother SC7 skyvan SH7 took off below airport takeoff minimums approved for his company. The company director of operations complains about the difference in the takeoff minimums of the government and commercial instrument procedures charts.
| Attributes | |
| ACN | 418764 |
| Time | |
| Date | 199810 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : bet |
| State Reference | AK |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Shorts SC7 Skyvan 3/3M |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| Qualification | other other : other |
| ASRS Report | 418764 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 280 flight time total : 3000 flight time type : 150 |
| ASRS Report | 418647 |
| Events | |
| Anomaly | non adherence : far non adherence other other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Pilot took off when WX conditions were below takeoff minimums. There appears to be confusion between what the commercial charts versus government charts depict. Commercial charts indicate takeoff minimums as low as 1/4 mi while government charts list no such minimum. The pilot has been lectured to in regards to his transgression and the company chief pilot personally advising each pilot of the applicable takeoff minimums. Supplemental information from acn 418647: part 135 regulations require that we use 1600 RVR or 1/4 mi. ATIS was reporting 3/8 mi at the time. The confusion came in when I thought 1200 RVR = 1/4 mi. I found out about the problem from another pilot who wondered how I took off legally. I told him and our thinking on RVR and RVV was different. We looked it up and he was right.
Original NASA ASRS Text
Title: PLT OF A SHORTS BROTHER SC7 SKYVAN SH7 TOOK OFF BELOW ARPT TKOF MINIMUMS APPROVED FOR HIS COMPANY. THE COMPANY DIRECTOR OF OPS COMPLAINS ABOUT THE DIFFERENCE IN THE TKOF MINIMUMS OF THE GOV AND COMMERCIAL INST PROCS CHARTS.
Narrative: PLT TOOK OFF WHEN WX CONDITIONS WERE BELOW TKOF MINIMUMS. THERE APPEARS TO BE CONFUSION BTWN WHAT THE COMMERCIAL CHARTS VERSUS GOV CHARTS DEPICT. COMMERCIAL CHARTS INDICATE TKOF MINIMUMS AS LOW AS 1/4 MI WHILE GOV CHARTS LIST NO SUCH MINIMUM. THE PLT HAS BEEN LECTURED TO IN REGARDS TO HIS TRANSGRESSION AND THE COMPANY CHIEF PLT PERSONALLY ADVISING EACH PLT OF THE APPLICABLE TKOF MINIMUMS. SUPPLEMENTAL INFO FROM ACN 418647: PART 135 REGS REQUIRE THAT WE USE 1600 RVR OR 1/4 MI. ATIS WAS RPTING 3/8 MI AT THE TIME. THE CONFUSION CAME IN WHEN I THOUGHT 1200 RVR = 1/4 MI. I FOUND OUT ABOUT THE PROB FROM ANOTHER PLT WHO WONDERED HOW I TOOK OFF LEGALLY. I TOLD HIM AND OUR THINKING ON RVR AND RVV WAS DIFFERENT. WE LOOKED IT UP AND HE WAS RIGHT.
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.