<< >> NASA ASRS Report 1571737, August 2018

B767-300 flight crew reported a discrepancy between a data-link communication altitude and the altitude ATC required.

Attributes
ACN	1571737
Time
Date	201808
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Other Controlled
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 120 Flight Crew Total 21060 Flight Crew Type 767
Person 2
Function	Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 15000 Flight Crew Type 5000
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance

Narrative:

While climbing out and talking to center; we were advised to participate with cpdlc (controller-pilot data link communications) clearances through center. We then acknowledge verbally and with cpdlc. We were given two route clearances in which we complied with via cpdlc with acknowledgments. Shortly after we received another clearance and it was to climb to FL330. We then acknowledge the cpdlc and commenced the climb to FL330. Shortly after reaching FL330; center asked us to confirm our altitude. We then told him we had complied with his clearance to climb and maintain FL330. He said he only showed FL300 as our clearance. We told him that our cpdlc clearance showed different. It show a clearance to climb to FL330. He then ask us to descend and maintain FL300; so we did. It was then that I took a picture of our ATC clearances on the FMC cpdlc page. The picture clearly shows a clearance to climb and maintain FL330. I have pictures on my phone of the ATC clearance; but there is no way to attach them to this form.

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Original NASA ASRS Text

Title: B767-300 flight crew reported a discrepancy between a data-link communication altitude and the altitude ATC required.

Narrative: While climbing out and talking to Center; we were advised to participate with CPDLC (Controller-Pilot Data Link Communications) clearances through Center. We then acknowledge verbally and with CPDLC. We were given two route clearances in which we complied with via CPDLC with acknowledgments. Shortly after we received another clearance and it was to climb to FL330. We then acknowledge the CPDLC and commenced the climb to FL330. Shortly after reaching FL330; Center asked us to confirm our altitude. We then told him we had complied with his clearance to climb and maintain FL330. He said he only showed FL300 as our clearance. We told him that our CPDLC clearance showed different. It show a clearance to climb to FL330. He then ask us to descend and maintain FL300; so we did. It was then that I took a picture of our ATC clearances on the FMC CPDLC page. The picture clearly shows a clearance to climb and maintain FL330. I have pictures on my phone of the ATC clearance; but there is no way to attach them to this form.

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.