<< >> NASA ASRS Report 1296660, September 2015

The crew accepted a late runway change; unaware that the glideslope was out of service. They received a low altitude alert from the tower although the captain had the field in sight. The captain took the aircraft from the first officer and landed uneventfully.

Attributes
ACN	1296660
Time
Date	201509
Local Time Of Day	0001-0600
Place
Locale Reference	SEA.Airport
State Reference	WA
Environment
Flight Conditions	Mixed
Aircraft 1
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT Inflight Event / Encounter Unstabilized Approach

Narrative:

After changing runways from 16R to 16L; we executed the localizer 16L approach. First officer (first officer) was the flying pilot. At MDA; first officer left MDA early to accommodate the landing; only to trigger a response from sea tower that there was a 'low altitude alert'. I advised tower that we had the airport in sight. Due to lack of maintaining 'localizer only' MDA experience that appeared to be manifesting itself at that moment; I elected to assume aircraft control from first officer but stating 'my airplane'. The first officer transferred control to me; and I executed an uneventful landing in the touch down zone of runway 16L.

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Original NASA ASRS Text

Title: The crew accepted a late runway change; unaware that the glideslope was out of service. They received a low altitude alert from the Tower although the Captain had the field in sight. The Captain took the aircraft from the First Officer and landed uneventfully.

Narrative: After changing Runways from 16R to 16L; we executed the LOC 16L approach. First Officer (FO) was the flying pilot. At MDA; FO left MDA early to accommodate the landing; only to trigger a response from SEA tower that there was a 'low altitude alert'. I advised tower that we had the airport in sight. Due to lack of maintaining 'LOC Only' MDA experience that appeared to be manifesting itself at that moment; I elected to assume aircraft control from FO but stating 'My Airplane'. The FO transferred control to me; and I executed an uneventful landing in the touch down zone of Runway 16L.

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.