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Situation. Missoula, mt, ILS 1 and 3 runway 11 shows incorrect altitude of 9000-9300' on the 25 mile arc. Commercial chart shows correct altitude.
| Attributes | |
| ACN | 121584 |
| Time | |
| Date | 198909 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mso |
| State Reference | MT |
| Altitude | msl bound lower : 9000 msl bound upper : 10000 |
| Aircraft 1 | |
| Controlling Facilities | tower : mli |
| Navigation In Use | other vortac |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : non radar |
| Experience | controller non radar : 6 |
| ASRS Report | 121584 |
| Events | |
| Anomaly | other anomaly other |
| Supplementary | |
| Primary Problem | Chart Or Publication |
| Air Traffic Incident | other |
Narrative:
In 8/86, our VORTAC was updated to a new generation type that is remotely monitored and also has no backup system. After flight checking it became apparent that it didn't have the power/coverage that our older one had. One of the first changes was a change to our ILS runway 11 approach altitude on the 25 mi arc. An fdc NOTAM was issued. To this day, the new altitude has not been printed on the IAP chart, though commercial chart made the change on the first revision after the new altitude took effect. It's been 3 yrs; why hasn't sac made the change? They say they're too busy!
Original NASA ASRS Text
Title: SITUATION. MISSOULA, MT, ILS 1 AND 3 RWY 11 SHOWS INCORRECT ALT OF 9000-9300' ON THE 25 MILE ARC. COMMERCIAL CHART SHOWS CORRECT ALT.
Narrative: IN 8/86, OUR VORTAC WAS UPDATED TO A NEW GENERATION TYPE THAT IS REMOTELY MONITORED AND ALSO HAS NO BACKUP SYS. AFTER FLT CHKING IT BECAME APPARENT THAT IT DIDN'T HAVE THE PWR/COVERAGE THAT OUR OLDER ONE HAD. ONE OF THE FIRST CHANGES WAS A CHANGE TO OUR ILS RWY 11 APCH ALT ON THE 25 MI ARC. AN FDC NOTAM WAS ISSUED. TO THIS DAY, THE NEW ALT HAS NOT BEEN PRINTED ON THE IAP CHART, THOUGH COMMERCIAL CHART MADE THE CHANGE ON THE FIRST REVISION AFTER THE NEW ALT TOOK EFFECT. IT'S BEEN 3 YRS; WHY HASN'T SAC MADE THE CHANGE? THEY SAY THEY'RE TOO BUSY!
Data retrieved from NASA's ASRS site as of August 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.