# Incident 20001005030449I: Lear 24DA, October 5, 2000

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: October 5, 2000, 18:03 local time
- Phase of flight: Climb
- Operating rules: Air taxi and commuter (Part 135)
- Operator: X5CA
- Aircraft: N996TD, a cancelled registration (https://openairdocs.org/deregistered/N996TD-2010-02-04) (OpenAirDocs)
- Registry model: Learjet 24D (registry code 5170310, https://openairdocs.org/model/learjet-24d) (OpenAirDocs)
- Registry engine: GE CJ610-SER series (registry code 30006, https://openairdocs.org/engine/ge-cj610-ser-series) (OpenAirDocs)
- Reported make and model: LEAR 24DA
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20001005030449I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23)THE PILOT OF N996TD MISUNDERSTOOD A CLEARANCE TO CLIMB TO A HIGHER ALTITUDE. HE READ BACK THE CLEARANCE TO ATC WITH NO RESPONSE.  AFTER RECEIVING TRAFFIC INFORMATION THE PILOT WAS CONCERNED THAT HIS ALTITUDE ASSIGNMENT MAY HAVE BEEN IN ERROR.  HE QUERIED ATC AND WAS INSTRUCTED TO MAINTAIN HIS PREVIOUSLY ASSIGNED ALTITUDE.  LOSS OF VERTICAL SEPARATION OCCURRED DURING HIS CLIMB AND SUBSEQUENT DESCENT.  THIS INCIDENT HAS A DUAL RESPONSIBILITY FOR THE ERROR.  THE INCIDENT REPORT FROM ATC CLEARLY STATES THAT THE CONTROLLER WAS "OFF LINE" SO TO SPEAK DURING THE PILOT'S READ BACK.  THERE IS DUAL RESPONSIBILITY OF ATC AND THE PILOT TO UNDERSTAND THE CLEARANCE.  ATC SHOULD HAVE CONFIRMED THE CLEARANCE IF THERE WAS CONFUSINON ON THE FREQUENCY.  THE PILOT, NOT RECEIVING ANY OTHER RESPONCE, BEGAN HIS CLIMB.  THEREFORE, THIS INCIDENT IS CLOSED WITH NO FURTHER ACTION.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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