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Pilot reported having an altitude excursion; citing radio congestion and nonresponse or correction from ATC as causalities.
| Attributes | |
| ACN | 1709886 |
| Time | |
| Date | 201912 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | LGA.Airport |
| State Reference | NY |
| Aircraft 1 | |
| Make Model Name | Medium Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach Descent |
| Route In Use | STAR KORRY FOUR |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
Due to low ceilings at lga; a runway change was issued; therefore sending many aircraft; including ours into holding patterns. The radios were congested. We were on the korry 4 arrival and were holding at holey for about 15-20 minutes.after a couple vectors out of the hold; at an altitude of 13;000' MSL (not 100% sure of altitude); we were then given a clearance of what I (pilot monitoring) interpreted as direct to brand and descend via the korry 4 arrival. I read back 'direct brand and descend via korry 4'. There was no response from ATC that I read back the instruction incorrectly. The captain as pilot flying then preceded to descend via the korry 4. Once we reached approximately 11;500' MSL; ATC told us that we were not given clearance to 'descend via'. ATC then gave us an altitude of 11;000' MSL.apparently there was confusion as to what ATC instructed us. I did not feel uncertain about the clearance; especially since my read back was not questioned by ATC; otherwise; I would have inquired. I'm not sure whether I or ATC communicated incorrectly. Regardless; I would say the most contributing factor or threat was radio congestion.
Original NASA ASRS Text
Title: Pilot reported having an altitude excursion; citing radio congestion and nonresponse or correction from ATC as causalities.
Narrative: Due to low ceilings at LGA; a runway change was issued; therefore sending many aircraft; including ours into holding patterns. The radios were congested. We were on the KORRY 4 arrival and were holding at HOLEY for about 15-20 minutes.After a couple vectors out of the hold; at an altitude of 13;000' MSL (not 100% sure of altitude); we were then given a clearance of what I (Pilot Monitoring) interpreted as direct to BRAND and descend via the KORRY 4 arrival. I read back 'direct BRAND and descend via KORRY 4'. There was no response from ATC that I read back the instruction incorrectly. The Captain as Pilot Flying then preceded to descend via the KORRY 4. Once we reached approximately 11;500' MSL; ATC told us that we were not given clearance to 'descend via'. ATC then gave us an altitude of 11;000' MSL.Apparently there was confusion as to what ATC instructed us. I did not feel uncertain about the clearance; especially since my read back was not questioned by ATC; otherwise; I would have inquired. I'm not sure whether I or ATC communicated incorrectly. Regardless; I would say the most contributing factor or threat was radio congestion.
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.