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B737 captain reported aircraft showed altitude discrepancy from that displayed by ATC. Pilot reports this anomaly is common at that particular airport.
| Attributes | |
| ACN | 1564928 |
| Time | |
| Date | 201807 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | RNO.Airport |
| State Reference | NV |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 264 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude |
Narrative:
On visual approach 34L; on glideslope; with ATC verified altimeter setting of 30.06; ATC verified altitude of 8300'; we showed a difference of about 175'. We verified MALSR and PAPI lighting on visual approach and landed without incident. Aircraft altimeters checked pre and post flight within aom limits. We mentioned the difference to reno tower; and he indicated that it has happened before. In fact; I have heard tower say to other carriers; many times; that they were low on approach; when they were showing on glidepath with correct altimeter on runway 16. There seems to be a known issue regarding disparity between aircraft; ATC; and approach fix altitudes. If there is a known issue; then I humbly suggest it should be addressed.
Original NASA ASRS Text
Title: B737 Captain reported aircraft showed altitude discrepancy from that displayed by ATC. Pilot reports this anomaly is common at that particular airport.
Narrative: On visual approach 34L; on glideslope; with ATC verified altimeter setting of 30.06; ATC verified altitude of 8300'; we showed a difference of about 175'. We verified MALSR and PAPI lighting on visual approach and landed without incident. Aircraft altimeters checked pre and post flight within AOM limits. We mentioned the difference to Reno Tower; and he indicated that it has happened before. In fact; I have heard Tower say to other carriers; many times; that they were low on approach; when they were showing on glidepath with correct altimeter on Runway 16. There seems to be a known issue regarding disparity between aircraft; ATC; and approach FIX altitudes. If there is a known issue; then I humbly suggest it should be addressed.
Data retrieved from NASA's ASRS site 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.