<< >> NASA ASRS Report 1512556, January 2018

Erj-175 flight crew reported flying too low after a false glideslope indication during a visual approach into den.

Attributes
ACN	1512556
Time
Date	201801
Local Time Of Day	1801-2400
Place
Locale Reference	DEN.Airport
State Reference	CO
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	EMB ERJ 170/175 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

Narrative:

On a night visual approach 16R. While turning to final at an altitude of about 7200 ft just outside the marker; glideslope showed we were two dots high; so per the aom (aircraft operating manual) I spun the altitude selector to 6400 ft; which was 1000 ft AGL; and engaged fpa (flight path angle) to descend. As we got established on final; I realized we were low and so set the altitude back up to 6600 ft. I immediately disengaged autopilot and leveled off until we were back on proper glide path. Normal landing and normal conclusion of flight. [I suggest using] better cross-checking between glide scope and visual cues; especially at night.had not flown to denver for nearly a year. A more thorough review for airports we have not been to in a while could have reminded us of the false glideslope issue and we could be ready for it.

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Original NASA ASRS Text

Title: ERJ-175 flight crew reported flying too low after a false glideslope indication during a visual approach into DEN.

Narrative: On a night visual approach 16R. While turning to final at an altitude of about 7200 ft just outside the marker; glideslope showed we were two dots high; so per the AOM (Aircraft Operating Manual) I spun the altitude selector to 6400 ft; which was 1000 ft AGL; and engaged FPA (Flight Path Angle) to descend. As we got established on final; I realized we were low and so set the altitude back up to 6600 ft. I immediately disengaged autopilot and leveled off until we were back on proper glide path. Normal landing and normal conclusion of flight. [I suggest using] better cross-checking between glide scope and visual cues; especially at night.Had not flown to Denver for nearly a year. A more thorough review for airports we have not been to in a while could have reminded us of the false glideslope issue and we could be ready for it.

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.