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Pilot not flying reports of a mumbled transmission that he accepts and turns to what he thinks he heard; along with maintaining a speed he thought he heard to maintain. Controller questions heading and speed and then comments to pilot asking why they would take a clearance they weren't sure of.
| Attributes | |
| ACN | 1186724 |
| Time | |
| Date | 201407 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | LAX.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Medium Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 177 Flight Crew Type 8944 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types Deviation - Track / Heading All Types |
Narrative:
As pilot monitoring; I checked in with socal after takeoff at 1;500 feet. I normally prefer to postpone check-in until flaps are up; but this is a busy frequency and we were heavy so we had a bit of time before acceleration to clean up speed. Departure's instructions to us were mumbled; but both the captain and I understood him to say to turn left to 185 and 250 knots until pevee. I read this back. He responded with a similarly mumbled response which I understood to be clarification of the speed restriction until pevee; to which I responded 'roger.' by this time we had to change configuration to capture the heading; and call for and select flaps up concurrently with the communication. Shortly thereafter; departure queried our speed; I responded that we were accelerating to 250 knots (we were heavy; and the airplane was slow to accelerate). A few moments later; the controller queried our heading. I responded; '185.' he was upset and issued some instructions that were not completely intelligible; but seemed to indicate we were to proceed direct to pevee. I responded with our understanding of our instructions; and he responded angrily with something along the lines of; 'turn direct to pevee; maintain 250 knots; climb and maintain 13;000.' 'why would you take a clearance you weren't sure of?' I read back the clearance; but didn't answer his last question.
Original NASA ASRS Text
Title: Pilot not flying reports of a mumbled transmission that he accepts and turns to what he thinks he heard; along with maintaining a speed he thought he heard to maintain. Controller questions heading and speed and then comments to pilot asking why they would take a clearance they weren't sure of.
Narrative: As pilot monitoring; I checked in with SoCal after takeoff at 1;500 feet. I normally prefer to postpone check-in until flaps are up; but this is a busy frequency and we were heavy so we had a bit of time before acceleration to clean up speed. Departure's instructions to us were mumbled; but both the Captain and I understood him to say to turn left to 185 and 250 knots until PEVEE. I read this back. He responded with a similarly mumbled response which I understood to be clarification of the speed restriction until PEVEE; to which I responded 'Roger.' By this time we had to change configuration to capture the heading; and call for and select flaps up concurrently with the communication. Shortly thereafter; Departure queried our speed; I responded that we were accelerating to 250 knots (we were heavy; and the airplane was slow to accelerate). A few moments later; the Controller queried our heading. I responded; '185.' He was upset and issued some instructions that were not completely intelligible; but seemed to indicate we were to proceed direct to PEVEE. I responded with our understanding of our instructions; and he responded angrily with something along the lines of; 'Turn direct to PEVEE; maintain 250 knots; climb and maintain 13;000.' 'Why would you take a clearance you weren't sure of?' I read back the clearance; but didn't answer his last question.
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.