<< >> NASA ASRS Report 1545994, May 2018

B767-300 flight crew reported that ATC queried their clearance and told them that they were below the glideslope. The crew corrected their flightpath.

Attributes
ACN	1545994
Time
Date	201805
Local Time Of Day	0001-0600
Place
Locale Reference	SFO.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Direct STAR DYAMD3
Flight Plan	IFR
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

Narrative:

[We were] handed off to final approach over archi [and] received clearance for the ILS 28R. The clearance did not include an altitude. Followed the ILS 28R transition lateral and vertical track with the intention of capturing the glide slope at 3;000 over cepin. At some point near girrr intersection; ATC questioned whether or not we were following the glide slope and that he showed us below. I replied that we were descending via the transition. No further communication was received.we captured the glide slope and flew an uneventful ILS. No loss of separation to our knowledge. Possible miscommunication between crew and ATC in regard to the clearance.

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Original NASA ASRS Text

Title: B767-300 flight crew reported that ATC queried their clearance and told them that they were below the glideslope. The crew corrected their flightpath.

Narrative: [We were] handed off to final approach over ARCHI [and] received clearance for the ILS 28R. The clearance did not include an altitude. Followed the ILS 28R transition lateral and vertical track with the intention of capturing the glide slope at 3;000 over CEPIN. At some point near GIRRR intersection; ATC questioned whether or not we were following the glide slope and that he showed us below. I replied that we were descending via the transition. No further communication was received.We captured the glide slope and flew an uneventful ILS. No loss of separation to our knowledge. Possible miscommunication between crew and ATC in regard to the clearance.

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.