Quest Diagnostics INC
Holds an FAA charter and air-taxi certificate (Part 135) under the designator Q5QA, overseen by the FAA office coded EA05. 18 aircraft are listed on the certificate, mostly PC-12-45. Most of the aircraft on its certificate are registered in Reading, Pennsylvania. Its flights broadcast the callsign Labquest (LBQ).
In the air now from the volunteer receiver network
3 of this operator's aircraft are in the air over the United States right now, and 1 is on the ground with the transponder on. See them on the live map. Counted here: aircraft on the certificate, and anything flying under its callsign, which can include aircraft it operates for others. Aircraft whose owners asked the FAA not to be displayed are left out.
Seen flying as Labquest last 30 days · 10 aircraft
Aircraft the receiver network heard broadcasting this operator's callsign, since the site started keeping the record on 7 October 2026. Some belong to the certificate, some are owned by the company, and some may be flown for it under an agreement.
| Tail no. | Type | On the certificate | Flights heard | Last heard (UTC) |
|---|---|---|---|---|
| N636QD | PC12 | yes | 8 | today at 1:31 am |
| N687QD | PC12 | yes | 7 | today at 1:31 am |
| N567QD | PC12 | yes | 2 | today at 1:30 am |
| N546PB | PC12 | yes | 5 | today at 1:30 am |
| N149QD | PC12 | yes | 2 | today at 1:19 am |
| N552TC | PC12 | yes | 3 | today at 1:19 am |
| N88QD | PC12 | yes | 5 | today at 1:18 am |
| N465QD | PC12 | yes | 1 | today at 1:11 am |
| N338QD | PC12 | yes | 5 | today at 1:05 am |
| N399SA | PC12 | yes | 3 | today at 12:57 am |
Connections how this operator links to the rest of the register
- Pilatus PC-12 9 on the certificate
- Embraer EMB-500 Phenom 100 2 on the certificate
- Pilatus 9 on the certificate
- Pilatus Aircraft Ltd 7 on the certificate
- Embraer-Empresa Brasileira De 2 on the certificate
- Reading, PA · where most of the aircraft on its certificate are registered
- Reading Rgnl/Carl A Spaatz Field · RDG
- Pennsylvania 6,176 aircraft registered
- FAA charter and air-taxi certificate 18 aircraft listed · designator Q5QA
- Callsign Labquest (LBQ) 10 aircraft heard in 30 days · on the live map
The whole map of how records connect · these connections as data: /graph/operator/quest-diagnostics-inc.json.
Aircraft on the certificate 18 · grouped by the FAA's model shorthand
PC-12-45 14
| Tail no. | Maker and model | Registered owner | Year | Status |
|---|---|---|---|---|
| N119QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 1995 | ValidFAA registration status code V: Valid registration. All codes |
| N120QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 1995 | ValidFAA registration status code V: Valid registration. All codes |
| N149QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 1996 | ValidFAA registration status code V: Valid registration. All codes |
| N338QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2000 | ValidFAA registration status code V: Valid registration. All codes |
| N399SA | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2001 | ValidFAA registration status code V: Valid registration. All codes |
| N412MD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2001 | ValidFAA registration status code V: Valid registration. All codes |
| N453PC | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes |
| N465QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes |
| N546PB | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2004 | ValidFAA registration status code V: Valid registration. All codes |
| N552TC | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes |
| N567QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2004 | ValidFAA registration status code V: Valid registration. All codes |
| N589QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clincal Laboratories INC Reading, PA | ValidFAA registration status code V: Valid registration. All codes | |
| N636QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2005 | ValidFAA registration status code V: Valid registration. All codes |
| N88QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes |
EMB-500-500 2
| Tail no. | Maker and model | Registered owner | Year | Status |
|---|---|---|---|---|
| N288DX | Embraer-Empresa Brasileira De EMB-500 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2010 | ValidFAA registration status code V: Valid registration. All codes |
| N899DX | Embraer-Empresa Brasileira De EMB-500 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2010 | ValidFAA registration status code V: Valid registration. All codes |
PC-12-47 2
| Tail no. | Maker and model | Registered owner | Year | Status |
|---|---|---|---|---|
| N687QD | Pilatus Aircraft Ltd PC-12/47 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2006 | ValidFAA registration status code V: Valid registration. All codes |
| N758QD | Pilatus Aircraft Ltd PC-12/47 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2006 | ValidFAA registration status code V: Valid registration. All codes |
Sources: the FAA's list of Part 135 and 121 certificate holders and the aircraft on each certificate, October 9, 2026; the FAA Civil Aviation Registry, October 8, 2026; the volunteer receiver network for what is in the air. An aircraft on a charter certificate is often owned by someone else and managed by the operator. Contact people named in the sources are not shown, the site's policy at this time. Is this your company? Claim or correct this listing: fix the base, add your website, send your own pictures.