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).
Website: questdiagnostics.com (found by search; tell us if it is wrong)
Contact Quest Diagnostics INC about charter flights, quotes and the aircraft
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In the air now from the volunteer receiver network
1 of this operator's aircraft is in the air over the United States right now. 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.
Where the aircraft are in the air, on the ground, parked, or not heard lately · refreshed every half minute
1 in the air, 3 parked (last heard on the ground within 7 days), 14 not heard lately.
Positions from the volunteer receiver network: an aircraft is "parked" when it was last heard on the ground within 7 days (it may have moved under a hangar roof or flown with the transponder off); "not heard" means nothing has been received since the date shown. Aircraft whose owners asked the FAA not to be displayed are left out.
Seen flying as Labquest last 30 days · 18 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) |
|---|---|---|---|---|
| N453PC | PC12 | yes | 133 | today at 3:22 am |
| N687QD | PC12 | yes | 192 | yesterday at 3:24 pm |
| N465QD | PC12 | yes | 175 | yesterday at 2:31 pm |
| N119QD | PC12 | yes | 209 | yesterday at 1:22 pm |
| N552TC | PC12 | yes | 291 | yesterday at 11:19 am |
| N149QD | PC12 | yes | 160 | yesterday at 8:12 am |
| N88QD | PC12 | yes | 180 | yesterday at 7:51 am |
| N120QD | PC12 | yes | 140 | yesterday at 7:47 am |
| N546PB | PC12 | yes | 168 | yesterday at 6:13 am |
| N589QD | PC12 | yes | 131 | yesterday at 5:19 am |
| N412QD | yes | 149 | yesterday at 5:08 am | |
| N399SA | PC12 | yes | 174 | yesterday at 4:26 am |
| N636QD | PC12 | yes | 165 | Friday at 3:54 pm |
| N567QD | PC12 | yes | 226 | Friday at 1:43 pm |
| N338QD | PC12 | yes | 145 | Thursday at 2:46 pm |
| N288DX | E50P | yes | 23 | Tuesday at 9:06 am |
| N758QD | PC12 | yes | 64 | Tuesday at 12:40 am |
| N899DX | E50P | yes | 9 | Monday at 1:29 pm |
Connections how this operator links to the rest of the register
- Pilatus PC-12 8 on the certificate
- Embraer EMB-500 Phenom 100 2 on the certificate
- Pilatus 8 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 6,188 aircraft registered
- FAA charter and air-taxi certificate 18 aircraft listed · designator Q5QA
- Callsign Labquest (LBQ) 18 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 | Register | Where it is |
|---|---|---|---|---|---|
| N119QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 1995 | ValidFAA registration status code V: Valid registration. All codes | parked parked at Dallas Love Field, last heard yesterday at 1:28 pm |
| N120QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 1995 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 7:47 am, in the air then |
| N149QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 1996 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 8:16 am, last near Reading Rgnl/Carl A Spaatz Field, in the air then |
| N338QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2000 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since Thursday at 2:50 pm, in the air then |
| N399SA | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2001 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 4:32 am, last near Middle Georgia Regional, in the air then |
| N412QD | not on the current register (deregistered, reserved, or a foreign registration) | not heard not heard since yesterday at 5:12 am, last near Reading Rgnl/Carl A Spaatz Field, in the air then | |||
| N453PC | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes | in the air in the air now, 10,475 ft, 7 nm from Frederick Municipal, as LBQ968 |
| N465QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 2:35 pm, in the air then |
| N546PB | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2004 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 6:13 am, last near Dallas Love Field, in the air then |
| N552TC | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes | parked parked at Centennial Airport, last heard yesterday at 11:22 am |
| N567QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2004 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since Friday at 1:49 pm, last near Dallas Love Field, in the air then |
| N589QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clincal Laboratories INC Reading, PA | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 5:27 am, in the air then | |
| N636QD | Pilatus Aircraft Ltd PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2005 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since Friday at 3:54 pm, last near Reading Rgnl/Carl A Spaatz Field, in the air then |
| N88QD | Pilatus PC-12/45 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2002 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 7:53 am, last near Reading Rgnl/Carl A Spaatz Field, in the air then |
EMB-500-500 2
| Tail no. | Maker and model | Registered owner | Year | Register | Where it is |
|---|---|---|---|---|---|
| N288DX | Embraer-Empresa Brasileira De EMB-500 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2010 | ValidFAA registration status code V: Valid registration. All codes | parked parked at Trenton Mercer Airport, last heard Tuesday at 9:14 am |
| N899DX | Embraer-Empresa Brasileira De EMB-500 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2010 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since Monday at 1:28 pm, last near Teterboro Airport, in the air then |
PC-12-47 2
| Tail no. | Maker and model | Registered owner | Year | Register | Where it is |
|---|---|---|---|---|---|
| N687QD | Pilatus Aircraft Ltd PC-12/47 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2006 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since yesterday at 3:30 pm, in the air then |
| N758QD | Pilatus Aircraft Ltd PC-12/47 | Quest Diagnostics Clinical Laboratories INC Reading, PA | 2006 | ValidFAA registration status code V: Valid registration. All codes | not heard not heard since Tuesday at 12:47 am, last near Grimes Airport, in the air then |
Sources: the FAA's list of Part 135 and 121 certificate holders and the aircraft on each certificate, October 31, 2026; the FAA Civil Aviation Registry, October 30, 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. Add the "Listed on eFlight" badge to your website.