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Pilot of an small aircraft descended recommended tpa during approach to land at an uncontrolled airport due to misreading the aeronautical sectional chart airport elevation.
| Attributes | |
| ACN | 512677 |
| Time | |
| Date | 200105 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : rhi.airport |
| State Reference | WI |
| Altitude | msl single value : 2100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme.artcc |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | descent : vacating altitude |
| Route In Use | approach : traffic pattern |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 8 flight time total : 1290 flight time type : 830 |
| ASRS Report | 512677 |
| Events | |
| Anomaly | non adherence : published procedure non adherence other other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Chart Or Publication |
| Primary Problem | Flight Crew Human Performance |
| Situations | |
| Chart | sectional : green bay |
Narrative:
I was flying at about 3500 ft MSL, 10 mi south of rhinelander airport. Being unfamiliar with the airport, I checked the green bay sectional chart (61ST edition) for the airport elevation. I read the elevation as 623 ft. I started my descent to a pattern altitude of 1600 ft. I was sure something was wrong when I got down to about 2100 ft. I seemed too low. I continued with a standard pattern entry and landed on runway 33 without incident. When on the ground, I looked more closely at the chart and discovered the field elevation is 1623 ft. The '1' digit is nearly completely hidden by the segmented line indicating class east airspace. I checked NOTAMS before the flight (via duats) but didn't see any applying to rhi airport.
Original NASA ASRS Text
Title: PLT OF AN SMA DSNDED RECOMMENDED TPA DURING APCH TO LAND AT AN UNCTLED ARPT DUE TO MISREADING THE AERO SECTIONAL CHART ARPT ELEVATION.
Narrative: I WAS FLYING AT ABOUT 3500 FT MSL, 10 MI S OF RHINELANDER ARPT. BEING UNFAMILIAR WITH THE ARPT, I CHKED THE GREEN BAY SECTIONAL CHART (61ST EDITION) FOR THE ARPT ELEVATION. I READ THE ELEVATION AS 623 FT. I STARTED MY DSCNT TO A PATTERN ALT OF 1600 FT. I WAS SURE SOMETHING WAS WRONG WHEN I GOT DOWN TO ABOUT 2100 FT. I SEEMED TOO LOW. I CONTINUED WITH A STANDARD PATTERN ENTRY AND LANDED ON RWY 33 WITHOUT INCIDENT. WHEN ON THE GND, I LOOKED MORE CLOSELY AT THE CHART AND DISCOVERED THE FIELD ELEVATION IS 1623 FT. THE '1' DIGIT IS NEARLY COMPLETELY HIDDEN BY THE SEGMENTED LINE INDICATING CLASS E AIRSPACE. I CHKED NOTAMS BEFORE THE FLT (VIA DUATS) BUT DIDN'T SEE ANY APPLYING TO RHI ARPT.
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.