# Boeing 720-023B

- Type: Aircraft model (FAA registry)
- Registry code: 1383841
- Manufacturer (registry): BOEING
- Model: 720-023B
- Aircraft type: Fixed wing multi engine
- Category: Airplane
- Engines: 4 · Turbo-fan
- Seats: 143
- Weight class: 20,000 lb and over
- Cruise speed: 466 mph
- Certification: Type certificated
- Registered aircraft: 0
- Page: https://openairdocs.org/model/boeing-720-023b

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft

None registered with this model now.

## NTSB investigations (3)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI67I0093](https://openairdocs.org/ntsb/CHI67I0093), Feb 3, 1967: Boeing B-720B (N7548A), Chicago, IL, incident, no damage
- [NTSB MIA67I0039](https://openairdocs.org/ntsb/MIA67I0039), Sep 26, 1966: Boeing 707 (N781PA), Nnassau, Burkina Faso, incident, minor damage
- [NTSB LAX66A0107](https://openairdocs.org/ntsb/LAX66A0107), Jun 29, 1966: Boeing B-720B (N7534A), Mojave, CA, substantial damage

## FAA accident and incident reports

None matched to aircraft with this model.

## Service difficulty reports (5)

As reported by operators and repair stations, by the model named in the report.

- [SDR CA100928007](https://openairdocs.org/sdr/CA100928007), Sep 27, 2010: SHROUD. BROKEN. DURING A DAILY INSP, THE TECH FOUND A PIECE OF THE NR 2 ENGINE (SN 632746) 2ND STAGE MID SPAN SHROUD MISSING. IAW ENGINE MM , NO DAMAGE ARE ALLOWED IN THIS AREA
- [SDR CA090203004](https://openairdocs.org/sdr/CA090203004), Jan 31, 2009: TURBINE BLADES. FRACTURED. APPROXIMATELY 3.5 HOURS INTO THE FLIGHT TEST PROFILE, CLIMBING OUT OF FL380 TO FL410 AT CLIMB THRUST, IN SMOOTH AIR CONDITIONS, A SUDDEN YAW AND VIBRATION WAS F
- [SDR CA000118046](https://openairdocs.org/sdr/CA000118046), Dec 21, 1999: TUBE. WORN. (CAN) DURING FLIGHT CREW ACTIVATED GEARDOWN AND FLAPS DOWN FOR TEST, NOTHING MOVED, FE NOTICED HYD RESEVOIR WAS EMPTY, EMER DECLARED, LG MANUALLY LOWERED AND AU
- [SDR CA970916015](https://openairdocs.org/sdr/CA970916015), Sep 1, 1997: CSD. FAILED. (CAN) ON GROUND CHECK PRIOR TO TAKEOFF THE NR1 ENGINE GENERATOR CAME OFF LINE AND COULD NOT BE RESET, SO CONSTANT SPEED UNIT/GENERATOR ASSEMBLY WAS DISCONNECTED
- [SDR CA960703033](https://openairdocs.org/sdr/CA960703033), Jun 13, 1996: SEAL. BLOWN. (CAN) AFTER LANDING THE F E NOTICED AN ACCUMULATION OF HYDRAULIC FLUID IN AREA OF L/H WHEEL. FUNCTION CHECK CARRIED OUT AND FLUID WAS LEAKING FROM BETWEEN HEAD 

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.